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300 WSM Load Data???

BIGMAC

Silver $$ Contributor
300 WSM and Berger 215 Hybrid load Data
With H4350 powder and H 4831sc. Will be used for 1000 yds. BR.
Thanks in advance for any info.
 
Last edited:
300 WSM and Berger 215 Hybrid load Data
With H4350 powder and H 4831sc. Will be used for 1000 yds. BR.
Thanks in advance for any info.

BIGMAC,
For the 215 Hybrid I've run 66.7 gr. of H-4831sc in a 32" Krieger 5R 1-10" (1.450 straight in barrel block on a Maxi-Tracker BAT model "M").
Norma Brass, Fed 210M, Barrel has a 0.285 Lead, Bullets were 0.012 Off the lands. Velocity was at 2957 fps and I consider this as a max load for my gun, in fact I've dropped it back .2 of a grain. - No leaking at primers but I could "feel" that they weren't as tight as on the previous loading. - Brass is neck-turned for a 0.014 neck thickness running in a 0.3395 neck chamber. - 5 shot group @ 300 yards was in the .3 range with hardly any vertical. (and I had 5-7 mph wind). - Of course you'll need to "tune" for your gun. - I'd start at 64.5 and work up.

Good Shooting, - Ron -
 
I don't compete but I shoot 215's with 69grs of R-26 at 2960fps in a 26" barrel with a OAL of 3.19" at .015" off. It typically shoots 3 in the .2's at 100 and I've shot a couple 5-6" groups at 950yds with it. That is as far as I can readily shoot where I shoot. This is a 10lb #5 contour hunting rifle.
 
Im using 215 bergers, norma brass, 215m primers, and using 60.5 grains h4350 seated at 18 thou. The gun is a stiller action with a rock creek 28inch 1 in 10t barrel suppressed in a mac stock. I shoot to 800 meters in our local benchrest competition and have shot out to 1400 yards at a pasture range. This combo works very well for me. I've chronoed the round but don't remember off hand what it was running.
 

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