Tag Archives: 6.5creedmoor

The Desert Tech MDRX

Advancing technologies have made every part of the firearm and shooting industry better, with new materials, better production equipment, and a growing competitive market all driving forward it is no wonder that so many new and exciting products are available today. Desert Tech has been pushing those limits since its inception in 2007, and this year they have released another great product that follows the Desert Tech adage Tomorrow’s Weapons.

The MDRX is the next generation rifle from Desert Tech, it builds on the already popular MDR rifle they released in 2016. The MDRX is a short-stroke piston operated semi-automatic bullpup, for those who don’t know already, a bullpup is a rifle configured such that the action, magazine, and firing mechanics are all located behind the trigger. The purpose of this design gives the MDRX a shorter overall length than conventional rifles of the same barrel length. When you add in the other additional features of the MDRX the difference becomes even more apparent.

Features
All Desert Tech rifles are designed with modularity in mind, and as such, they are all available as multi-caliber chassis and barrel combinations. The MDRX shares that same heritage, as it stands at the moment it is available in four different calibers from the factory; 223 Wylde, 308 Win, 300 BLK, and 6.5CM. All four of these barrel conversion kits can be interchanged in the same chassis, making the MDRX one of the few modern sporting rifles to accept both large and small frame calibers. All this from an SBR sized weapon without the stamp.
Being a semi-auto bullpup adds some challenges when it comes to universality, these challenges were overcome with ingenuity. The MDRX is completely ambidextrous, all of its controls are mirrored on both sides of the rifle for both right and left-handed shooters. In addition to the ambi controls, the rifle has a forward ejecting system that sends spent brass casing forward away from the shooter. Previous bullpup designs eject brass to the right side, which in a bullpup is a bad thing if you are left-handed. The MDRX can be fired from the right or left side with no concern of catching hot brass to your face. And if you are a dedicated left-hand shooter, you can swap ejection from forward right to forward left in just a few seconds.
The MDRX comes standard with a compensator made by Desert Tech called The Ratchet, the compensators are caliber specific to provide the best performance in recoil reduction and to stop muzzle rise.
One of the major challenges with bullpups is creating a good clean trigger pull, this is due to the linkage required to connect trigger shoe to the sear pack. This is another challenge that was overcome with design ingenuity, and the resulting trigger feel of the MDRX is widely accepted as great. Of the many people who have pulled the trigger on an MDRX, the common consensus is that it is a good trigger, not just for a bullpup, but a good trigger period.
The MDRX has a six-position adjustable gas valve allowing the operator to tune the rifle to whatever ammunition they might use, as well as use the rifle with a suppressor and a lower gas setting.
The MDRX’s aluminum/polymer chassis construction features full-length upper Picatinny rail, M-LOK slots for accessories and flush-mounted QD sling cups on the rear of the receiver. It is also designed to accept most AR-15 style magazines, and for large frame calibers, it uses SR-25 pattern mags. The rifle ships with caliber appropriate P-mags from Magpul.
The various caliber conversions for the MDRX feature popular twist rates, and standard barrel thread for adding muzzle accouterments. There are also both sixteen-inch, and twenty-inch barrels available in several of the assorted calibers, giving shooters different performance options. And with different barrel lengths, there are two different handguard lengths to go along.
The ambidextrous charging handles of the MDRX are non-reciprocating, they are normally locked to the front in a spring-loaded detent. They can also be locked to the rear by pulling them back and up, the release is as simple as slapping either of the handles down, and the bolt carrier closes into battery. The gun locks open upon firing the last shot from the magazine, the bolt release is centrally located right behind the magwell. This allows for very quick reloads by simply extending the thumb when seating a fresh magazine, thus closing the bolt on a fresh round. This actually can make reloading faster than most AR-style rifles due to fewer steps in the reload process.
The forward ejection system is perhaps the most curious of all the MDRX’s features. The open-faced bolt extracts the spent case and carries it to the rear, as the carrier travels it engages the ejector with a dovetail lug on either side. The momentum of the carrier then pulls the scissor-like ejector out, and it swipes across the open bolt face pushing the spent case off and into the ejection chute opposite. There it is retained by a spring-loaded pawl until the bolt carrier again travels forward where a protruding lug pushes the spent case forward and out the ejection chute. It’s a very interesting system, the only flaw I found with it is that when unloading an unspent cartridge from the rifle, it does require a firm stroke of the charging handles to get the cartridge seated firmly in the ejection chute. This is not so much a flaw as much as it is a training practice needed to be followed. The ejection system is designed to be used on either side of the rifle, both the ejector and chute can be swapped from one side to the other in seconds.

The MDRX SE utilizes a standard side ejection system

Also new for 2020 is a new side ejecting MDRX, for those who prefer a simpler, more traditional ejection pattern. The side eject is available in. 223 Wylde only, and can also be swapped from right to left side ejection. There is also the added benefit of a lighter overall weight, and a less expensive price tag.

On the Range
With several barrels in hand, I took the MDRX into my mountain hide to test its function. I started out shooting with the sixteen-inch 308 Win barrel, and loaded with Fiocchi 150 Grain FMJ ammunition at one hundred yards. After zeroing the sights, I fired a few five-shot groups, which ended up being around two MOA in size.
I continued firing the rifle at several additional targets to see how it ran. I found the recoil to be much softer than the previous similar rifles I had shot, this surely had much to do with the Ratchet compensator. The trigger was very clean and crisp, the reset is quite audible, I attribute that to the highly conductive poly receiver who’s hollow construction makes a very resonant chamber. I fired several additional groups using additional ammunition types as well, American Eagle XM80 as well as some 168 Grain match ammo from both Hornady and Federal. The match grade ammo certainly provided better groups, they averaged right around one MOA.

The MDRX seen with 20 inch 6.5CM barrel and longer handguard

So with several hundred rounds through the rifle, and a respectable shooting and zeroed rifle, I figured it was time to test the metamorphosis of this multi-caliber gifted rifle. The barrel is removed from the MDRX using a five-millimeter hex wrench, the rifle comes with one, but I prefer to use the suggested eighty-inch-pound torque limiter. After removing the handguard via two loosened screws and one take-down pin, the barrel is released by loosening the two barrel clamp screws by about one turn, and then disengaging the barrel lock 180 degrees to allow the barrel to slide out the front of the chassis. The bolt must be locked open to the rear to complete this operation. I then installed the twenty-inch 6.5 Creedmoor barrel, seating it firmly towards the breach. The process is then reversed, turning the barrel lock 180 degrees, and then torquing the two barrel clamp screws to 80 inch-pounds with a torque limiter. Followed by re-installing the handguard, which I had swapped out for the longer one. The rifle had just transformed from a sixteen-inch 308 Winchester into a twenty-inch 6.5 Creedmoor, and I was excited to see the increased performance. The point of impact would not be the same from one barrel to the next, but it was on paper at one-hundred yards, so it only took some minor corrections.
The 6.5 Creedmoor shot very well, with 140 Grain ammunition from both Hornady and Desert Tech, the groups averaged much better, in the sub to half MOA realm. With this kind of accuracy, I couldn’t wait to take the MDRX out to more significant distances.

For several hours the rifle neatly piled up brass right in front of my shooting mat, the rifle never malfunctioned, and just kept eating magazine after magazine of ammunition. I also fired some S&B 140 grain ammo through the rifle without any problems, I would have liked to try some lighter loads like a 120 grain, but I didn’t get the chance.

A typical 5 shot group from the MDRX 223 Wylde 40 Grain Fiocchi (100 Yards)

The rifle is easily swapped to smaller caliber barrels as well, the 223 Wylde and 300 Blackout do require a little more though.
A change of the bolt, a magwell spacer, and a swap of the ejection chute are required in addition to the barrel change.
The 223 Wylde shot just as good as the 6.5 Creedmoor, sub MOA groups were easy when shooting good ammo.

The great performance of the MDRX was hard to deny, it is a very compact rifle, with incredible reach, and good accuracy. Desert Tech has upped the game with this rifle, and they stand behind all their rifles with a lifetime warranty. It would be a great rifle whether you are hiding in a tree stand, need a behind the seat truck gun, or anywhere you’d need heavy firepower in a compact package. Its larger calibers are certainly useful for big game hunting and some distant shooting, while the smaller calibers are great for quick target shooting in a 3-gun style competition or varmint hunting. The MDRX carries a higher than average price tag, but that is because it brings so much more to the table. The multicaliber option alone actually saves money by consolidating your training, and less money spent on optics and accessories. You literally could do almost every American shooting activity with this one rifle. Whether it is a home defense rifle or a suppressed ranch rifle, the MDRX is a do-all rifle if ever there was one.

-CBM

The 2019 Late Season for Elk

Video at the bottom of article

Every winter, after the cold snow starts to build up in these Rocky Mountains, I get a bit of fever going. Not the kind of fever that normally comes with the cold season, this fever is far more profound. Its a fever born not from germs or microorganisms, but rather comes from my DNA. Like many of you I was born to hunt, and the knowledge that hunting season is around the corner fills me with excitement and a feverish desire to get after it. The late-season elk hunts in our state of Utah give a much-needed extension to this natural high, and its one we all seek out ever year. This year was certainly no exception.

My herd of elk is a small one, it consists mainly of cows and their offspring. There is usually a few yearling cows, and spikes as well, and even more infrequent are the occasional mature bulls that follow them onto the winter range. Every year they come back the same pass they did the year before, and miles away, hunched behind a spotting scope gnawing on a cheese stick you will find me. Usually, I have all my gear ready by the time they show up, and this year it was only a matter of hours before we were on them.

Both friends and family participate in this yearly ritual, and today it was me and a good friend who we’ll call “Russ”. We had seen part of the herd heading in the right direction the evening before, and this morning we returned to our glassing post to see if they were still there. I say the right direction meaning a place where we knew we could get a downed elk out without extreme difficulty, we made our way towards the small group as they fed through the snow.

A cold cloudy day for all of us

At seven thousand feet the air is thin and cold, and the fifteen to twenty mile an hour winds were not making it any better. We continued our stalk through the cold wind, knowing at least that it would cover both our sound and scent. We closed the distance to five hundred and twenty yards, any closer we would lose them with the rise of the hill. So we planted ourselves and set up our equipment, Russ was shooting a custom-built .260 Remington Ackley improved, on the end he had a Delta P Design 6.5 suppressor, and a Bushnell Elite Tactical scope mounted on top. In the magazine were a handful of Hornady 140 grain ELD-m handloads. Russ pushed his rifle up a snowy embankment pointing towards the elk herd, and I slid up to another spot, with my Desert Tech SRS A2 sitting in the saddle of my Precision Rifle Solutions tripod. I had been using the twenty-four inch 6.5 Creedmoor barrel in my rifle, and had very recently installed a new optic, the Riton Optics RT-S Mod 7 4-32 riflescope. I was shooting a new experimental lathe-turned solid bullet from Patriot Valley Arms, it is a 123 grain copper solid hollow point. Both of our rifles were shooting very close ballistic patterns, in fact, at the five-hundred and twenty yards we both dialed 2.2 MRAD of elevation, and with the wind blowing at a slight angle, we both held about .2 MRAD left wind. A wind call we would later rejoice over.

As we lay there freezing in the snow, we had to wait for a good shot. The low angle against the ridge made interference from brush and branches an issue, so we waited as the wind carried snow over our rifles and faces. The plan was to execute a command fire, both of us shooting in near unison to hit both animals before the rifle report ever reached them. Sounds easy enough, unless your trigger finger is freezing into a stiff hook while you wait. After a few long and shivery moments, we had two cows that offered us an acceptable shot. After loudly whispering back and forth about who was shooting at what, we counted down, fingers on triggers. In my mind, I decided it would be better to just shoot upon hearing the report of Russ’ rifle, so that’s what I did.
I was already pressing the trigger shoe on my SRS when I heard the rip of his 260 go off, so I finished my pull and sent the second round uphill towards the unsuspecting elk. Russ’ bullet found its mark perfectly, hitting just behind the left shoulder. She immediately lurched forward from the startling impact, while a few yards behind her, the second cow chewed bark from some of the brush. She may have seen the other cow leap forward, but it was too late. My bullet also impacted just behind her shoulder passing through her lungs and tapping her vertebrae as it passed by. This impact dropped her in her tracks, and she rolled down the steep and slippery slope. The first cow had just made it perhaps forty or fifty yards, both of us still trained on her with our rifles. And we watched as she stumbled, and tipped over, leaving a bright red blood trail through the pure white snow. It was over so fast, and yet my trigger finger was nearly frozen. I stowed it between my cheek and gum for a few minutes to bring back sensation.

Fresh lung blood blown across the brush

We stood up in the breeze and watched as the remainder of the small herd slowly worked away from us. High fives were exchanged, and even a hug from the excitement. The work, however, had just begun, I doubted we would be getting too much aid in our elk extraction. So we left everything we wouldn’t need and carried only the bare essentials like knives, warm clothes, some rope and a few snacks. The steep mountain and snow-covered ground made the going slow, but an hour or so later, we stood over one of the two elk. After investigating her injuries and condition, we triangulated the other elk’s location based off the tracks leaving the first. The other cow lay exactly where expected, and left us a good trail to find her with.

As we began the decent with our two prizes, the morning had given way to a beautiful and sunny midday. We took our time, rolling and sliding these two ladies down the hill, taking breaks as needed.

As the afternoon went on however the clouds came back in, and threatened to freeze over the whole mountain. As we sat reposed in the snow, I watched as Russ’ dark pants steamed in the sunlight. But as the clouds came over us, it was like an icy blanket, and we both watched as the steam from his pants quickly turned to frost before our eyes. It was time to move.

After another four or so hours, we made it back to the truck, where we were met by other good friends who helped load our prize. An incredible blessing to have good friends to help after such a labor intensive day.

We have shot several other elk this winter, the most common factor is good friends and solid relationships. Elk hunting seems to forge relationships between like minded hunters, the intensity of labor, and overwhelming obstacles seem to sort fair-weather friends from what I consider to be the finest group of dear friends. I consider myself lucky to have them.

-CBM


ES Tactical 6.5Creedmoor Barrel for the MDR

Just when I thought I was up to my ear’s in MDR, Eric Smith from ES Tactical found it expedient to dump another huge helping of MDR in my lap. It wouldn’t take long to figure out which way this would go.

As a guy with too many irons in the fire already, I took the 6.5 Creedmoor barrel with a grain of salt (I know you all feel my pain). Had it not been for my stellar experience with Eric’s work, I might have even backburnered this project. But instead, I took the first opportunity to stab my MDR with this latest addition to the pile.

Ive shot the MDR quite a bit, some might even say more than anyone else. The MDR is a multi caliber bullpup rifle. The rifle was first available in 308, it will soon be available to the public in 223. But for those of you that already have the gun, you can wet your multi caliber whistle without waiting by ordering a 6.5 Creedmoor from ES Tactical. I shot quite a bit of 308 in the beginning, and I loved having so much power in such a little package. With the 308 barrel installed, the MDR can put down a serious amount of hate and anger. But it is still quite capable of MOA accuracy, and at distance as well. Just a short while ago, the 223/556 conversion was made available to me. In the short time I spent with it, I became very enamored. The minimal recoil, and outstanding accuracy made the compact MDR even more desirable, you can read more about that here.

So you can imagine my excitement when the option came to try out the Creedmoor in my beloved little rifle. The Creedmoor offers the same accuracy as the other cartridge options, but less recoil than the 308, and a better envelope for distance as well.

I couldn’t resist the appeal, so I hurried up to my local shooting hole, and warmed up my trigger finger. Upon arrival I ran a few magazines of 223 through the rifle, just to get my trigger finger into shape, then set to swap the rifle over to the Creedmoor.


The MDR as seen with 223rem barrel (installed with YHM Turbo) Sixteen inch 308win, and the ES Tactical eighteen inch 6.5CM barrel

Since the 6.5 and the 308 share the same boltface, magazine, and a few other parts, there is only a need for a barrel assembly should your rifle be a 308. Since my rifle was currently a 223, I had to swap bolts, remove the magwell block and switch the magazine catch.
To see how the MDR is converted from one caliber to another click here

It took a few minutes, and I was ready to make some noise. Except I wouldn’t. I hate shooting without the proper muzzle accoutrements, so I attached one of my favorite suppressors, the Silencerco Hybrid. The barrel assembly from ES Tactical came with a six position gas key, allowing for refined tuning of the rifle. I found it quite unnecessary to figet with, as the rifle functioned flawlessly, it consumed and expelled everything I fed it.

Speaking of diet, I tried a few different things. I started out with Desert Tech munitions 140 grain match, I have always had good luck with it, and today was no exception. I also tried some of the more popular brands, such as Hornady 120 Grain Match As well as the gold standard Federal Gold Medal Match 130 grain And the very popular Prime 130 Grain Match

The accuracy results from this fine selection varied slightly, the DTM, and Hornady gave the best results. Both of them printed groups that were mostly hole, and little paper. The Prime and Gold Medal were not too far behind, it is my guess that the Berger and Norma 130 grain bullets used may perhaps be a bit more finicky with seating depth. Which may explain the larger patterns. DTM shown in blue, Hornady in red, Federal in yellow, and Prime in green

As you can see in the groups the stringing is horizontal on the better ones, it seemed to follow the heating of the barrel. The first three or four shots in each group were either touching or stacked. It was usually the fourth, fifth or sixth shot that were the outliers (I may have lost count a few times, I was enjoying myself😌). The lesser groups didnt seem to have any particular pattern. I only ran a chronograph on the DTM 140 grain ammunition, the average over a couple magzines worth of ammo showed 2610fps. I was quite pleased with the velocity from this 18 inch barrel, with a MV like that, coupled with MOA or better accuracy, this thing would be very useful for anything inside 1000 yards.

Being as familiar as I am with the platform, I have gotten used to it’s quirks and folleys. This familiarity has helped me avoid some of the little things that cause malfunctions, so it didn’t surprise me at all that I experienced no failures. I did note that the brass was coming out pretty dirty but otherwise fine, I suppose I could have dialed down the gas pressure a little after all.

The thread protector, threads, and crown of the ES Tactical 6.5Creedmoor barrel

In total, I shot probably 80 or so rounds (not counting the 223 appetizer). It was smooth shooting, the recoil was very mild, and with the suppressor mounted up, I could shoot all day. This setup would be awesome for a threegun carbine, it’d also make the perfect truck gun, or patrol rifle. So many possibilities, I doubt it will be long before the next flavor MDR comes along.

Should you find youself in need of a Creed for your MDR, give Eric a call over at ES Tactical, and dont forget he cuts awesozme barrels for your SRS, or just about anything else you might want too.

-CBM

Here is the video:

6.5 Creedmoor

It’s no secret that I am a fan boy for the Desert Tech Stealth Recon Scout, I have spent the last few years getting intimately familiar with its virtues. I have had the chance to use the SRS in many different applications, including hunts of all kinds, as well as competitive, and long range shooting. Today I am writing about one of the many reasons why the SRS system, with its seemingly unlimited options has replaced every other rifle in my safe.

I jumped onto the 6.5/.264 bandwagon a couple years ago, it was a 26” 260 Remington that sealed my opinion of the .264 bore. That original barrel has around 3000 rounds on it, and the bullets it has fired have crossed untold miles of cold mountain canyons, and hot desert plains.
The 6.5 lineup has grown over the years, too many to mention here, but the bulk of the work is done by the 260 Remington, 6.5 Creedmoor, and the 6.5X47 Lapua. We could debate for days (and we often do) about which one of the three is best, and why. But today, I have chosen to focus on the 6.5 Creedmoor.

I jumped onto the 6.5/.264 bandwagon a couple years ago, it was a 26” 260 Remington that sealed my opinion of the .264 bore. That original barrel has around 3000 rounds on it, and the bullets it has fired have crossed untold miles of cold mountain canyons, and hot desert plains.
The 6.5 lineup has grown over the years, too many to mention here, but the bulk of the work is done by the 260 Remington, 6.5 Creedmoor, and the 6.5X47 Lapua. We could debate for days (and we often do) about which one of the three is best, and why. But today, I have chosen to focus on the 6.5 Creedmoor.

I appreciate the aesthetics of properly manufactured ammunition, and the Creedmoor loaded by Desert Tech Munitionsis a perfect example. Clean and smooth edges, the discoloration of annealed brass, and a uniform presentation that gives a consumer confidence. Looks certainly are not everything when it comes to ammo, so I wasted no time getting to my shooting position.

It was a cool and breezy evening, a snow storm was inbound, threatening to soak my target, my SRS, and of course me. None the less I hiked with purpose to the spot I go to when time is short.
A quick shot of the rangefinder confirmed my one hundred yards to the target, I found a comfortable position with a good solid rest.
The barrel I was using to test this ammunition was virgin, I had only finished its assembly an hour or so before I left work. So a zero had to be achieved before any accuracy testing could be done.
I opened the first box, and loaded ten rounds.

My first shot landed about 1.5 inches low, I measured with my reticle, and made a corrective adjustment. The next 8-9 shots went into one ragged hole, and but for one shot that I knew was bad when it broke, it was as good as anything I’d ever shot previously. That is of course not saying much, as I’m terrible at shooting groups. But even for me, it seemed quite easy to stack shots on top of each other. I continued to shoot five shot groups one after another, I was more than happy with the patterns that this ammo made, through this brand new barrel. I’m very interested to see how it does after its broken in.

After shooting a few boxes of ammo at 100yds, I called it a day. The snowy weather was making it hard to see anything, and the wind was starting to get worse. So I retreated back down the mountain trail, suspending my testing temporarily for a better day.

As soon as permissible, I made my way back up into the mountains. A few days had passed, and the blue sky stretched as far as I could see across the valley. I made my way up the winding mountain road, my ATV laden with a days’ worth of gear, snacks, and snow. As I climbed higher and higher, the snow got deeper. But silence and solitude was the reward. When I finally found the spot I wanted to shoot from, I had gained nearly 3,000 feet more than my first outing with the Creedmoor. Nothing but a light breeze and sunshine at that altitude.

Again I setup my target at 100 yards, and did a quick zero test. I was pleased to see that my cold bore shot was exactly on my point of aim, and the several shots that followed were right on top of it. Happy that nothing had changed since my last outing, I decided to push the Creedmoor out a bit further. I started at 642 yards, I wasn’t about to walk that far in the deep snow. Instead, I found a small cube shaped rock on a small exposed piece of dirt across a long draw. I estimated the rock to be two or three inches in width, a reasonable sized target for that range. So I set to getting the wind and elevation for the shot. I wanted to see how close the come ups listed on the box were to actual , so I made an estimation from the data printed there, and made a wind call. I loaded the magazine as I went over everything in my head, then settled in behind the rifle. I focused on my trigger pull, and broke the shot, the impact was right at the base of the small stone. I made a small correction hold, and sent three more shots at the rock. All of them found their mark, smashing the rock, and sending its pieces rolling into the snow below.
I repeated the process at 860 yards, and again at 970. I was very impressed with the accuracy, shot after shot was right where I had aimed. And when it wasn’t, I knew it before the rifle had finished recoiling.

Obviously, I am a bit biased in most of my opinions here. But I can certainly say without any bias, this is the most accurate factory ammunition I have ever shot. Consistency is king in this game, and I cant wait to keep stacking shots in the black with this Creedmoor.
-CBM