300 prc powder

208STLHD

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Joined
Nov 5, 2022
Messages
48
Location
Idaho
I'm currently shooting a 215 Berger with n568. Looking to change it up and get my es down. I have retumbo h1000 and rl26. Prefer not to shoot the 26 because it is impossible to get right now. Any load data and experience would be useful.
 
I shoot 215s in my 26" 1:9" 300PRC too.
H1000 gets me up around 3015fps.
N570 gets me 3045fps, but is dirty. Different recoil impulse too, more of a hard fast push than a pop.
Retumbo wasn't as accurate, so I didn't pursue it.
 
I'm shooting a seekins rifle with lapua brass I have 2 fire and virgin brass but will be using 2 fired until it's all shot up. Don't have federal 215 wish I did but I'm using cci250. It shoots decent with N568, just want to get my es down it's roughly 40fps now. I have tried 570 and that was a big no go.
 
Don't be afraid to try a little more neck tension
I'm running a Wilson sizing die with a .336 I believe bushing that gives me 2 thou. I'm considering putting a .335 or .334 bushing in it and ordering a km mandrel for 2 and 2.5 thou. I'm pretty happy with N568 honestly if I could get it a little more consistent. My average velocity is 3030. Groups at 100 are between .6 and .75 always. But past about 800 I start having poi changes in elevation. I'm convinced it's the spread.
 
Didn't mention that I'm jumping them 15 thousandths. I tried them from 10-25 off and it definitely like 15 best.
 
I have tried n568, n570, rl 26, H1000, retumbo. I had the best consistency and accuracy with H1000. I got wonky numbers with n570 and n568 was very slow. I have a slow barrel but I shoot the 215 at 2950 with a 26" barrel with H1000.
 
215's 2956 with 78.5 gr H1000 1-9 26" proof barrel Federal 215m primers and Lapua brass. N570 shoots the best in my rifle.
 
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