Tag Archives: riton optics

Riton Optics RT-S Mod 7 4-32X56

Riton Optics is a relatively new manufacturer of optics, since their start in 2013 they have been working in the Arizona heat to make affordable sighting optics without sacrificing quality.
My first encounter with Riton Optics came a year or so ago, when I put their RT-S MOD 5 6-24X50 scope on one of my rifles. I wasn’t sure what to expect as Riton was relatively new to me, but in a short time the scope’s performance had earned my praise. That same scope has been hauled all over these Rocky Mountains on my Tikka , dropped, snowed on, rained on, used as a crutch, and still maintains a perfect zero. Its no stranger to distance work, these past two seasons it has been used to take five mule deer and two cow elk from two hundred to eleven hundred yards. So I can say with pretty good certainty that these scopes are robust enough for western hunters.

The Riton Optics RT-S Mod 5 6-24X50 mounted on my Tikka T3 25 Creedmoor

I recently talked myself into one of Riton’s newer and bigger scopes, the RT-S Mod 7 4-32X56. The Mod 7 is definitely a step up in both price and performance from my Mod 5, at more than twice the price, the Mod 7 delivers quite a few more features to the optics aficionado. Both scopes are front focal plane (FFP), which means the reticle is magnified with the power adjustment. This feature allows shooters to use the reticle for accurate holdovers and corrections regardless of the magnification setting. The 8X zoom of the Mod 7 gives a substantial power range from 4X up to 32X, like many scopes, however, I found the very top end of the magnification (29-32x) to be too dark and aberrated to be very useful in the field. It was fine for shooting paper targets up close though.

The PSR reticle in the Riton Mod 7

The PSR reticle featured in my Mod 7 was also a significant step up from the Mod 5. I say step up, some might call it stepping out, the PSR reticle is a bit busier than some. It is a “Christmas Tree” style reticle, with a broadening grid of wind and drop values. I am growing more and more fond of these kinds of reticles, and this one is done very well. Subtensions are clearly marked (on the evens) so you can keep track of your holds, and the marks are thin enough to not bother your view of potential targets. A hollow center and .2 Mrad hash marks come in handy when doing long-range work. The illumination rheostat allows shooters to adjust reticle illumination to fit their surroundings.
Speaking of Mrad, the Mod 7 is available in Mrad which made me very happy. It was one of few complaints I had with my Mod 5, that it wasn’t available in anything other than MOA. Seems like most Riton optics are MOA, could be related to their military background, but I am glad to see newer products available with an Mrad option.
The Mod 7 has a 34mm tube, this again is a step up from the Mod 5’s 30mm tube. The bigger tube allows for more internal travel, giving the Mod 7 a total of 30 Mrad of elevation adjustment. That’s more than enough elevation for your average long-range shooter.

Turret details and throw lever on the Mod 7

Another feature I appreciated on the Mod 7 was the integrated throw lever on the magnification ring. Some call it a “Cat Tail”. You can run the scope with or without it, the throw lever gives you more purchase when trying to adjust the power ring, not a big deal, but a nice touch.
The Mod 7 also features a zero stop in the elevation turret, something the Mod 5 did not. This feature is handy, as you can return your elevation turret to zero without even needing to look at it. This will save you from a miss by being a rotation or more off.
One of the features both scopes have that I don’t like is there isn’t graduation marks on the turret housing to show which rotation you are on, to be fair it is much less of a problem on the Mod 7 because there are only two turns. The Mod 5 has several more, making it hard to be sure which rev you are on unless you keep track in your head.

I mounted the Mod 7 on my Desert Tech SRS A2 rifle, which seemed like a good fit for the scope. With the new hunting weight 6.5 Creedmoor barrel mounted in the rifle, I figured it would make a good companion for this years elk hunts.
But first I took the rifle to the range to get a good solid zero and check a few other things. My first impression with the Mod 7, was that the eye relief seemed to be just a bit touchy. Not so much as to be a problem, just more so than I was used to. I quickly zeroed the rifle and adjusted the zero stop per the instructions, easy enough and very functional. I then took the rifle up into the mountains to do some more testing at further ranges. I was very happy with the optical clarity of the Mod 7, even when looking at animals and trees at a mile or more away, it was a very clean and bright image.
As I mentioned earlier, the quality does degrade some at the very upper end of the scopes magnification, this is something I have noticed with most scopes including the Riton Mod 5. This is a phenomenon I have noticed on almost all riflescopes, but it is significantly less an issue as the price tag goes up.
It doesn’t bother me much as I rarely use a scope at its maximum power setting, for that matter I rarely use them above 60-70 of their maximum. The glass clarity of the Mod 7 is a great improvement over the Mod 5, as it should be at this price point.

The turrets on the Mod 5 have a push pull locking system, whereas the Mod 7 does not. I am torn a bit as to which I prefer, sometimes I like having my turrets locked, to avoid involuntary elevation changes. And other times I like just being able to turn the turret without having to unlock it. For hunting, I think I prefer the locking system, but for range or competition use I would prefer it without.
The turrets are plenty stiff so as not to be inadvertently moved, the clicks are plenty audible, though I would like them a tiny bit more defined. The line between too stiff, and to mushy a click is a hard line to walk sometimes.

As it turns out, I really enjoyed the throw lever on the magnification ring. To be honest I couldn’t describe the tension on the magnification ring, because with the throw lever it doesn’t even register.

It didn’t take long for me to get quite proficient shooting with the Riton Mod 7, so when the time came to put this rifle into action I was quite comfortable. The late season elk hunt had arrived, and I took my Riton topped SRS up into the snow covered mountains. The first shot I was given was some 475 yards away from a young cow, I dialed the 2.0 MIL on the Mod7’s elevation turret, and pressed the trigger. The cold and clean mountain air was visibly disturbed by my shot, I watched the trace cut through the bright image before me as I followed the shot in. I watched the cow drop, kick, and slide down the snowy slope.

The Riton Mod 7 has turned out to be a strong, clear, accurate and repeatable rifle scope. I look forward to using it more in the future.

-CBM

One of the five deer killed over two seasons using the RT-S Mod 5 6-24X50

Operation Quarter Lord, the 25 Creedmoor

I suppose you could say I’ve come full circle, I started this game with a .25 caliber rifle, and after many many years I have a new one. I learned much with that first rifle, a Ruger M77 in 25-06, I still have it, and I dont think I’ll ever get rid of it.

My love for the 1/4 bore was cut short, by the lack of high Ballistic Coefficient bullets. There is a good assortment of 115-120 grain bullets, but many of them peeter out long before my then goal of one thousand yards. So despite claiming many of my first’s, the 25-06 went to the back of the safe.
In the defiance of time, I always had a 1/4” hole in my soul. Turns out that I wasn’t alone, and some folks with impressive math skills finally saddled the long range quarter-horse. Black Jack Bullets is a new manufacturer with a specialty in high BC 25’s.
As soon as I had spoken with Miles and Logan, I was convinced that my old love of the 25 needed to be rekindled. I almost immediately started Operation Quarter Lord, my goal; a .257 rifle that I could build light, and haul all over these Rocky Mountains to take antelope, deer, and even elk.
Due to the piles of 6.5 Creedmoor brass I had laying around, I decided to go with the 25 Creedmoor. I wanted to stay with a mag fed short action, and with Black Jack’s new high BC bullet (.330G7) it would outperform even the heaviest 6.5 Creedmoor loads.

From Blackjackbullets.com
Since this story was originally published, Alpha Munitions has produced 25 Creedmoor headstamped brass, you can find it on their website. Petersen Cartridge company has also made some.

The project came together very quickly, parts started arriving, and my gunsmith took minimal arm twisting to spin it up. We started with a Tikka T3 action, then added an X-Caliber .25 caliber, seven twist blank. Cut to finish at twenty two inches, because I dont like long rifles. All that was left, was a chassis system. I have always been a big fan of KRG, so I took this opportunity to get hands on their new Bravo chassis, it’s rigid and intuitive design was a perfect fit for this project that I wanted to keep light, but tight. Everything was cut, chambered threaded, and finished at ES Tactical, Eric does great work, and Im beginning to lose track of how many barrels of his I have.

With a twenty MOA scope base mounted on the Tikka, I mounted up my new scope, the RTS Mod 5 6-24X50 from Riton Optics. You can read more about the scope here: Riton RTS Mod5.
For rings I went with Aadland Engineering thirty milimeter HD rings, Mr. Aadland makes top notch mounts and I’ve always loved the quality.

Now that I had the rifle basically built, it was time to start manufacturing the top fueled cartridges that would make the Xcaliber hum. I started fireforming the Alpha Munitions 6.5 Creedmoor brass. I considered myself lucky to have such high quality components available. Alpha makes probably the best brass money can buy, and their small rifle primer brass was perfect for this high pressure project. To make the 25 Creedmoor brass, I swapped my Redding 6.5 Creedmoor die’s bushing out for a .281. Then I would run the lubed neck over a .257 expander ball. I was amazed at how consistent the Alpha brass was, seating depths were extremely uniform due to the constant neck tension. Looking back, I’d probably go with a .282 bushing, to work the brass less.

I also tried several other brass manufacturers, just for the sake of science. I made 25 Creedmoor brass out of Hornady, Lapua (SP), Federal, and Petersen. As you might imagine, the Federal and Hornady had some pressure issues and stiff extraction with the hottest loads. Even the Petersen was a little sticky, but the small primer cases won the day for sure. Both Lapua and Alpha had zero stiff extraction, but the Alpha took a smidge more powder. This allowed for a non-compressed load, with the best velocity, and no pressure related problems. Alpha is definitely the way to go.

With both bullets and brass so rare, I was very slow and methodical in my loading. The long pointed tips of the 131 Ace seemed to fit just fine in my 6.5 seating die, and despite their long nose, they still fit the AI mag. I seated the bullets twenty thousandths off the lands, and charged the cases with 42.7 grains of Hodgdon H4350.

Hornady 120 HP’s were used for fire forming

The chronoed loads with the 131 Blackjacks averaged 2930fps, with single digit SD numbers. The groups fired were easily 1/2 MOA, and if I wasn’t so terrible at shooting groups, they’d likely cut in half. The X caliber barrel obviously was a big part of the accuracy, which wasn’t a surprise to me as the other X caliber’s I have shot were also very accurate. And even though we cut it at 22 inches the velocity was right where I had hoped it would be.

L to R: .25 Ace131, 6.5 Barnes 140, 6.5 Berger 140, 6.5 Hornady 140

The main appeal of the Ace 131 is obviously the BC, which is advertised at .330(G7), I have found that number to be fairly conservative.
Unlike many manufacturers, Blackjack must not inflate their data. After punching in all the data to various ballistic engines, I was consistently shooting over targets by a minute or two. The only way to compensate for it was to true up the BC to a slightly higher number. Once I did that, my Trasol program was predicting the bullet path close enough to make cold bore hits on 1-2MOA targets at 575,840, and 1057, each with a follow up confirmation hit. All this in a very switchy wind as a storm came in, the Ace didnt seem to mind. With my average DA here in the high desert, the Ace should stay supersonic to almost a mile.

My next project for this rifle is hunting season, which is only a few days away. I might make it easier on Junior by just taking the one rifle for both of us, and any deer within half a mile would be foolish to show his tines. With a trajectory nearly as flat as my 7SAUM shooting 183 Sierra Match Kings, but the tender recoil of a Creedmoor, I cant imagine a sweeter little deer rifle. And first chance I get I’ll put it up against wild Wyoming’s pronghorn as well, but the likely precursor will be Rocky Mountain Elk.

My very first elk fell to a single shot from that old 25-06, and with the added power and accuracy of the Blackjack Ace 131 I am very confident both Junior and I can pull it off again.

Im a hunter at heart, so thats where I always turn towards. But the 25 Creedmoor would really shine in a competition setup. With its light recoil, super flat trajectory, and great accuracy, it would stand ahead of most of it’s 6.5 competitors.

This project is still very fresh, so I will continue to update this post with new information as I get it. There will be acompanying youtube videos soon, on both the rifle and its components. Follow my social media pages for frequent updates, and for answers to your questions. And follow the links here in the article to get to those mentioned.

-CBM

Edited to add:

The video

So far in the fall/winter season of 2018, we have managed to kill three mule deer with the 25 Creedmoor, and two elk. Shots varied from 220yds, 500yds, and 600yds on the deer. And both elk were shot right at 300 yds with a neck shot.


The smaller of the two deer, shooting position off in the distance.
The larger of the two deer, taken in a good snowstorm

In the fall hunting season of 2019, Operation QuarterLord took another two deer. The first one, a small mule deer at an astounding 1100 yards. The second one, a larger three-point was taken at 450 yards. Both of them took a single shot through the vitals, and neither of them made it more than a few steps.