6.5 PRC and 4831sc

[DocGlenn]

I just got a Christensen Arms MPR in 6.5 PRC. Began barrel break in and load development this weekend. I have a decent amount of 4831sc on hand, so I thought I try it out. Bullet is a 140 gr Berger Elite Hunter, brass is Hornady Precisison Hunter brass from factory loads. Winchester magnum primer. Started with 54.5 gr, and worked up from there. Seemed to shoot well, and I got into the 2950 fps range. All groups are 5 shots, except the last one, that was 15. Got 10 more rounds to go to finish barrel break in.

54.5–2850–SD 15.3

55.0–2870–SD 10.4

55.5–2891–SD 3.7

56.0–2914–SD 10.9

56.3–2952–SD 14.1

56.5–2954–SD 16.1

I was pretty pleased with this. Probably going to try 56.7 and 57 for the last two break in groups just to see if I can get to 3000. Definitely a MOA rifle and almost certainly, better than that.

 

[gpo1956]

I'm using 53.5 grains in ADG cases with the 142 ABLR and am getting 2890 fps but with one hole grpoups at 100 yards. Shot a nice buck at 170 yard with very good results. I think I'll stay there. H4831SC is a very good powder. It worked well with 140 ELDMs and also the Berger 135 Hunters.

 

[sp6x6]

Know where I could find hornady brass?Went local and on line,tough out there.Going try another place local Monday too

 

[backwoods83]

I'm with you, I had a fresh 8lb jug of H4831sc when I got my PRC finished, and a big box of 130 AR hybrids. I started with 50 pcs of Hornady brass, went from 55-60 grns in .5 increments, 4 shot groups, 59.5 was a ragged hole with a SD of 3, although a small sample. I got 100 pcs of Bertram brass, had to drop the charge to 58.8 to duplicate it, 275ish rounds in, and it's still running 3253-3256 avg with a 3-5fps SD, 29" barrel by the way. I've won a steel shoot out to 1100 yrds with it, and took a 8 point whitetail at 687 2 years ago. I think H4831 or 4831sc is an excellent choice for the PRC, until you get to the 147+ bullets, then I'd probably opt for H1000, Retumbo, RL26, or N565.