During my two month leave from here, I did a few things to mine. Cant remember where I was with it when I got banned but I'm back and its shooting flawlessly.
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I've always been a fan of a two-stage trigger and wonder if the Timney would be a worthwhile upgrade over the stock unit. It's a bit on the pricey side and the stock trigger is not that bad at all.
RPR Magazines and OAL:
Most of you know this but I thought it might be helpful to summarize. I'm too indolent to review 70 pages of posts!
The SAAMI max OAL for 6.5 CM is 2.825", so a bit longer than .308 Win at 2.80". Factory 6.5 ammo is usually loaded to 2.81". Many precision rifles are fed from a detachable magazine as this is an advantage for PRS competition. Therein lies the rub. Again, you'd like to have the option to seat the bullets out near the lands. But you need the rounds short enough to function through your box magazine. I usually have to load to fit the magazine, not what my bullet seating gauge is telling me.
If you're running an AR-10 rifle, you'll be limited by the magazine (often a Magpul). The Ruger Precision Rifle was cleverly designed to work with either AR-10/SR-25 style magazines, or the AICS (Accuracy International Chassis System) magazines. Those are different than the magazines for the AI bolt guns like the AE, AT, or AX rifles.
Some data is out there for OAL limitations for different magazines but I thought it would be worth checking. I was loading some 6.5 Creedmoor rounds today and decided to pursue this. I was loading the Hornady 140gr SST bullet which has a polymer tip, making OAL measurements consistent and easy. I started with rounds loaded to an OAL of 2.90" and worked down. Here are the results:
Accuracy International metal magazine for the AE/AT bolt rifles: 2.90" (a particular blessing for the .308 rifles!)
Accurate Mag short-action magazine for .308: 2.90"
https://www.brownells.com/magazines/rifle-magazines/magazines/short-action-aics-magazine-308-winchester-prod45250.aspx?avs|Manufacturer_1=ACCURATE+MAG
This is an AICS style magazine and will fit and retain in the RPR. Just not as nicely as the Magpul magazines!
Magpul 5 and 10-round AICS Magazines (work nicely in the RPR): 2.88"
https://www.magpul.com/products/pmag-10-762-ac
Pmag 7.62 10-round magazines: 2.83"
https://www.magpul.com/products/pmag-10-lrsr-gen-m3?ProductColor=VO343
Pmag 25 M118 7.62 magazines: 2.83"
https://www.magpul.com/products/pmag-25-m118-lrsr-gen-m3-window?ProductColor=VO343
(These work fine, but may interfere with your shooting position and I like the 10-round mags better)
Regular 7.62 Pmags 20 and 25 round: 2.81"
https://www.magpul.com/products/pmag-20-lrsr-gen-m3?ProductColor=VO343
Brownells metal .308 magazine for the AR-10: 2.81" (not sure if this is still in production)
I'm going to print the following summary and post it in the reloading bunker. This should avoid my past inefficiency of using a bullet seating gauge and producing ammunition too long to function through the doggone magazine!
_______________
Accuracy International metal magazine for the AE/AT bolt rifles: 2.90"
Accurate Mag short-action magazine for .308: 2.90"
Magpul 5 and 10-round AICS Magazines (work nicely in the RPR): 2.88"
Pmag 7.62 10-round magazines: 2.83"
Pmag 25 M118 7.62 magazines: 2.83"
Regular 7.62 Pmags 20 and 25 round: 2.81"
Brownells .308 AR-10 20 rounds: 2.81"
Anyone have a load for 6.5CM 24” LRI barrel 1/8 w/143 ELD-X and Hybrid V100, If not, any idea where I should start.
Hornady brass
Large Winchester Primers
I am using 43.5 of RL16 under the 140 eld-m bullets with Hornady brass and Federal 210m primer in my rpr with LRI bbl. Not sure if that helps.
ARC MAG 10-Round 7.62x51, 308 WIN
www.americanrifle.com
Nice setup!During my two month leave from here, I did a few things to mine. Cant remember where I was with it when I got banned but I'm back and its shooting flawlessly.
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Can youguys with rprs do me a favor and take a look at your firing pin /bolt assembly. I have a retaining pin? That looks like it's wiggling its way out of my firing pin assembly. I tried grabbing a punch and lightly tapped/pressed it to see if it would go back to being centered inside the hole, but it won't budge. Now I'm wondering if it's supposed to look like this? Can you guys see if your setup looks like mine? Posting pics in a min...
Nice setup!
Actually I just got it back from ruger from a unrelated repair and yes they put a ton of goop/grease in there.NO! It's not supposed to be like that. It should be centered. You will need to more than "lightly" tap it to get it to where it should be. That pin is in rather right, so needs a little muscle to get it in.
BTW: Am just curious, did your RPR bolt come with that much goop around the firing pin?
Mines a 6.5 Creedmoor gen 3 but I think all the firing pins are the same. Yours definitely doesn't stick out like mine. Looks like I'll be getting midevil on it to get it back in place.Yours does look like it's out a little based on my pics. Mine is a Gen 2 6.5 CM which probably doesn't matter.
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Okay any tricks for getting the pin to go back in place? I got the brass punch, steel punch and beat on it for a half hour and it is not budging. It actually started shaving brass off my punch.NO! It's not supposed to be like that. It should be centered. You will need to more than "lightly" tap it to get it to where it should be. That pin is in rather right, so needs a little muscle to get it in.
BTW: Am just curious, did your RPR bolt come with that much goop around the firing pin?
Finally had a chance to shoot my RPR .300 win mag. Tried several 5 shot groups with Winchester brass, 225gr ELDM bullets, H1000 powder ranging from 75.9-77.1gr, GM215M primers, .025 off lands.
Vortex viper gen2 5x25 scope
Bag in rear Harris bipod up front
Only managed mediocre accuracy. 1.25- 1.5 MOA @150 yards. Had a couple groups where 4 of 5 shots were in the .5-.6 MOA range. The flier was typically off in windage.
The best load was 76.8gr. 2888fps average, 13ES, 5SD as measured with a Prochrono at 15' from muzzle. It managed a .55MOA vertical spread and 4 of 5 where within a .6MOA. windage spread but one round brought the windage out to nearly 1.5. Sucks. I may have to play with seating depths to see if that helps with windage dispersion. The ELD M bullet has a secant ogive so it could be sensitve to seating depth like other VLD-style bullets. BTW, Cross wind was variable but <= 5MPH so I don't think it was wind induced.
Hope I can figure it out.
Btw, the recoil was very modest. The brake works well and the rifle is getting close to 20# so that helps too.
Okay any tricks for getting the pin to go back in place? I got the brass punch, steel punch and beat on it for a half hour and it is not budging. It actually started shaving brass off my punch.
Clearly the pin is under pressure, I tried using the little tool in shroud to take the pressure off the firing pin and still couldn't get that pin to budge. I tried a little oil as well and am not having any luck. I put it all back together and just went shooting. It appears to be staying in place, but I know it's not right. Any tips for getting the damn thing back in place?
I followed this vid for complete bolt breakdown. It’s pretty easy..
I ordered the 300 WM RPR today. It’s a beast of a rifle. How is your Harris bipod holding up? I have Harris bipods on other rifles such as my 308 RPR. I’m a fan of the Harris bipods but wondering how it’s holding up to your 300 WM.
I just mounted one on mine (300 WM) I'm curious how it will hold up as well.
I keep the target in my reticle (sight picture) the whole time thru recoil etc.. I just have the stock muzzle break and it does an excellent job. (6.5 creed)For you guys shooting the 6.5 Ruger Precision how is the recoil management keeping the target in the reticle? With my 308AR I was never able to keep the target in the reticle. 7.62x39 I was watching bullet all the way into steel last weekend. Just not able to do it with heavier hitting.
I cycled the action on mine a ton when I first got it, and it smoothed out pretty good. There's a vid on YouTube of a guy putting lapping compound on his bolt and cycling it like a thousand times, but it made a massive mess... I would just maybe put a little grease on the bolt and cycle the action a bunch, it will smooth outMy friend got the 6mm creedmoor gen2 and the bolt is stuff and clunky. Any way to smooth it out?
Outstanding I will be shooting with a can....figured it would be ok. I like they have gone to MLOK handguards.I keep the target in my reticle (sight picture) the whole time thru recoil etc.. I just have the stock muzzle break and it does an excellent job. (6.5 creed)
Have him check his freebore. Take it from me....Mr. 3.My friend got the 6mm creedmoor gen2 and the bolt is stuff and clunky. Any way to smooth it out?
Outstanding I will be shooting with a can....figured it would be ok. I like they have gone to MLOK handguards.
The factory keymod isnt really that bad. I have a Seekins SP3R handguard with MLOK but I wouldnt have minded keeping the keymod. It works just as well.
For you 6.5 guys with access to chrono I've got another question if you don't mind. Been reading the Rifleshooter articles on barrel length and effect on velocity. Seems like 22-24 is the sweeter-ish spot. I will also have a suppressor. Any thoughts on what if any considerations for barrel length? I ask b/c the study actually showed increasing over 24 started to slow the velo and I just don't know what effect my can will have with respect to that? 24" barrel with 8" Q Thunder Chicken to boot.
6.5 Creedmoor- Effect of Barrel Length on Velocity: Cutting up a Creedmoor!
Since its introduction by Hornady in 2007, the 6.5 Creedmoor (sometimes shortened to Creed) has established a strong foothold in the US rifle market. The 6.5 Creedmoor balances the excellent exter…rifleshooter.com
For you 6.5 guys with access to chrono I've got another question if you don't mind. Been reading the Rifleshooter articles on barrel length and effect on velocity. Seems like 22-24 is the sweeter-ish spot. I will also have a suppressor. Any thoughts on what if any considerations for barrel length? I ask b/c the study actually showed increasing over 24 started to slow the velo and I just don't know what effect my can will have with respect to that? 24" barrel with 8" Q Thunder Chicken to boot.
6.5 Creedmoor- Effect of Barrel Length on Velocity: Cutting up a Creedmoor!
Since its introduction by Hornady in 2007, the 6.5 Creedmoor (sometimes shortened to Creed) has established a strong foothold in the US rifle market. The 6.5 Creedmoor balances the excellent exter…rifleshooter.com
Friend of mine is running a 26” with a 7” can at 2850 with 140ELDs, 2827 with 147s
What I read somewhere is that MLOk is preferable only because many more accessories are available for MLOK than for keymod.
Great thank you guys appreciate it. I am really liking the Gen 3 6.5. If I am tracking it all they went: MLOK over KeyMod, ambi-safety. Anything else?