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Ruger precision RPR 308win load data

This is a discussion on Ruger precision RPR 308win load data within the Reloading forums, part of the Firearm Forum category; Hi any one wish to help me with your best found recipes for case, powder load, primmer & pill for RPR in 308win. I'm tweaking ...


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Old June 26th, 2016, 01:03 AM   #1
 
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Ruger precision RPR 308win load data

Hi any one wish to help me with your best found recipes for case, powder load, primmer & pill for RPR in 308win.
I'm tweaking my own atm but any guidance be appreciated your Coal
cartridge-over-all-length (or to the lands) data be helpful as well.



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Old June 26th, 2016, 05:49 AM   #2
 
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Best advice I can give you is to forget what someone else used in their rifle as their rifle isn't your rifle and your rifle will no doubt want something different as it's best accurate load. Look in a good manual like Sierra's load manual take a load and shoot it. Then tweak it for your rifle using the ladder method. If one recipe fit all that's all you'd see in the loading manuals. I could give you what I load for my Savage 110FP in 308W. My load for that rifle shoots in the high 3's, but it probably won't shoot the same in your Ruger as they are totally different rifles. Even if my load was developed for a RPR it no doubt wouldn't shoot the same as they have different barrels, probably chambered with different reamers etc. Then you get into what was the temp my load shot into the 3's?? Was it winter or summer? What shot into 1 1/2" in the winter might shoot well under an inch at 80 degrees using the exact formula or vice versa.
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Old June 27th, 2016, 12:12 AM   #3
 
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Thanks reply paddy im aware the difficulty of finding the load recipe vs various rifle species & set up so im was hoping a RPR 308 owner who has done this may pass by to help guide me in tested projectile weight and any other learnt wisdom..& even then same species can shoot quite different with same load but it be handy to learn by others & if not I'll use this thread to track my own RPR 308w tinkering.
My 155g palma match pills in ful neck winny case and 45g of 2208 - Coal 70mm was not working so im moving to make up a handfull of other brand & weight projectiles with Hornady cases and bench test to see how we go


This was Hornady Whitetail 308w 150g factory ammo at 200 yards so ok close but i'd like to get them all touching.

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Old July 10th, 2016, 02:00 AM   #4
 
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RPR 308w load testing is starting to show some results, 45.7g of 2208, 71mm Coal with el cheapo $ ppu case topped with nossler competition 168g pills.. thats 5 shots making only 4 holes @100 yards. i'll continue to tweak that recipe see if can tighten it up.

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Old July 10th, 2016, 02:04 AM   #5
 
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Sadly the Hornady Whitetail 308w 150g cases were not quite as hoped, they refused to neck form well and the primmer pockets was very/much to tight for Federal large primers,,,, an odd result for expensive product i must say.
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Old July 10th, 2016, 12:09 PM   #6
 
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Brass: Lapua
Primer: CCI BR2
Powder(s): 8208, Varget, 4064
Bullet(s): Berger 168grn VLD, Nosler 165 Accubond, Hornady 168 A-Max

Neck Size only, 30thou off of the lands for the VLD, 10-15thou for the Accubond and A-max.

Press, shoot, and be merry.
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Old July 10th, 2016, 04:39 PM   #7
 
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Quote:
Originally Posted by Varminterror View Post
Brass: Lapua
Primer: CCI BR2
Powder(s): 8208, Varget, 4064
Bullet(s): Berger 168grn VLD, Nosler 165 Accubond, Hornady 168 A-Max

Neck Size only, 30thou off of the lands for the VLD, 10-15thou for the Accubond and A-max.

Press, shoot, and be merry.

I would be surprised if this does not get you well within tweaking range
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Old August 6th, 2016, 03:54 AM   #8
 
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i worked pills right up to the jam 72.4mm Coal but found a tad jump from 71.2mm+ back is best 168g Nossler competition pushed with 45.7g 2208,, the 155g club parma VLD sadly dont work.



ah my mistake its 45.7 top left and thats 4 shots in same holes for top right interesting how 70mm coal / 45.5g pulls shots to right wonder why and how this happens
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Old August 6th, 2016, 08:40 PM   #9
 
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how fussy and tech minded are you?

I sometimes load Sierra 175 MK with Varget , like 43 grains using Winchester brass & CCI 200 primers. This is a hot load.

I also like the 155 Barnes Match burner with Varget, Re 15, & IMR 8208. Loads vary but I use 46 grains of Re 15 with the 155 and Winchester brass. Alliant data is much higher than that.

Another load is the 125 grain Speer TNT with max loads of W748., like close to 50 grains or so. As expected velocities approach 3100 fps.

If possible I would suggest getting a copy of the Berger manual and taking a look at the form factor descriptions.

Things change year to year - some time ago the favorite load for long range was the 155 Sierra Palma with Varget. Velocities were about 2900 plus out of a 29-30 inch barrel. This gave way to 185's - much slower but less drag to compensate for lower velocities.

Barnes 155 match burners are relatively cheap and Varget, IMR 8208, and Re 15 work well. I turn my brass necks enough so I can get a slip fit of a bullet into a fired case and turn just into the shoulder to help with "donut" prevention. I F/L size all my ammo but use Forster F/L dies that have been "honed" out to avoid over work hardening necks. I guess you could get Forster to help you with this or you could get a Redding F/L bushing die with the proper size bushing. I like Lake City 7.62X51 brass - American Eagle. Winchester brass is good also. I seat bullets just short of contacting - the Barnes Match Burner bullet is forgiving.

I don't hunt with my .308 but if I had to shoot some beast in the 300 pound or less size I would use the 150 grain Hornady SST. Almost all of my .308 shooting is less than 500 meters.

Last edited by BassMan; August 6th, 2016 at 08:43 PM.
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Old August 6th, 2016, 09:49 PM   #10
 
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Cheapest way to find out what might work may be a box of FGMM 168gr or 175gr or both. If one or the other shoots well, Seirra bullets, IMR4064, and your choice of (Lapua) cases and primers If they don't, be surprised and look elsewhere.
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Old August 9th, 2016, 05:31 PM   #11
 
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Another load that I used for several years of hi power shooting was the 168 Hornady hpbt match bullet and (of all strange powders) H380.

There are NO .308 Win H380 loads that I can find in my manuals but this combo worked fine for me up to 600 yards.

H380 might be difficult to buy in Australia but Varget or whatever it is called down there would not be - a load of just under 43 grains and somewhat more might be good. Hornady makes good bullets, my past shooting coach who won several state championships shot Hornady bullets. A box of 100 Hornady 168's costs about $10 (U.S) less than Sierra MK's.

Lapua brass is without doubt, at least for me, the very best but is sort of pricy. If excessive neck forming is avoided, preventing work hardening lots of reloads can be obtained from each piece of brass.

I have recently started using new Federal American Eagle, NATO type, Lake City Brass. This is not the once fired stuff with crimped primer pockets that need to be either swaged or reamed out. Surprisingly, this is very good brass, made for automatic weapons subjected to battering. Possibly, the U.S. Government, Department of Defense (DOD) sends out inspectors or checks on the quality of this stuff. A rim torn off by an extractor would make for problems.

I began to turn the necks of my brass to match my chambers some time ago. This is no big deal. I turn the brass using my cordless (screw driver) and RCBS neck turning tool down to where a bullet will easily slide into a fired case. If the bullet can slide into the fired case without turning I just skim the surface of the neck. The turning is continued just a very slight distance into the shoulder to avoid formation of a "donut".Then measuring the diameter of the turned down neck I subtract .003 inches for the diameter of the intended die bushing or Forster F/L die neck. This ensures adequate and uniform neck tension to hold the bullet yet avoids excessive brass working and work hardening.

Usually dies excessively reduce neck diameters only to expand the neck out by drawing the brass neck over a expander button. This accelerates work hardening - does a number on pricy Lapua brass.

I full length resize all my brass every time to ensure easy feeding from the magazine.

All this might seem involved (fussy) but has been worthy for me. I was able to get some good 600 yard scores using these techniques.

Last edited by BassMan; August 9th, 2016 at 05:36 PM.
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Old August 10th, 2016, 12:52 AM   #12
 
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much thanks reply's all im listening and adding as i can ideas offered
I just necked & trimmed 50+ cases and going to prime and load them for next weekends... some frustration is atm hornady 308 projectiles are hard to come by, i had ordered various weight hornady pills waited 5 weeks only to find the supplier had none in stock so atm just using the 168 nossler competition. Ill get some but it gonna take some time.

I am interested in lapua 308 brass with the small primer flash hole, it sounds a nice idea and will search for these next few weeks..
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Old August 10th, 2016, 12:58 PM   #13
 
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There are lots of fine bullets out there, in fact, of the major manufacturers it might be difficult to find a bad match bullet.

If you shooting a .308 at 500 meters or less, bullets from 155 to 175 will be just fine. Some 1000 yard shooters like Berger 185's.

There is some controversy about small vs large primers in the .308. I never loaded small primer .308's but have loaded plenty 6.5X47 Lapua's with small magnum primers, mostly CCI 450's with some Remington 7 1/2's and have had no problems with powder charges exceeding 40 gr. with H4350 and H414.

If Lapua makes a small primer .308 case there has to be a reason.
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Old August 11th, 2016, 04:10 AM   #14
 
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today i got hold of box 30 cal 308 125g nossler ballistic tips a very lite pill from what i been using. I loaded up 10 reduced the load by % factor be interesting how they fly.
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Old August 11th, 2016, 11:16 PM   #15
 
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loaded up, 100 zero and 300 yard range tomoz the green tip 125g nossler pills are in there just to see how they go

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