Viking painter
Member
- Joined
- Jan 11, 2023
- Messages
- 73
Hi all, hope your day is full of great things. So last week I bought a lb of sw sbr socom to try in 300 blk for some 150 gr fusion bullets to try and get better velocities and sd#s as I’ve read and been told that this powder is excellent for 150 gr and it’s pretty cheap as well. The first test I did with it was with some Winchester power point pulls that I have just to get a idea of how it would perform. I started at the recommended range, I believe 18.5 gr up to 20.5 gr in .5 increments at a oal of 2.107, ginex srp, shot out of my 10.3” sbr suppressed. Well, my calculations were off and the oal was supposed to be 2.170 and got pressure signs and extraction burrs on all of them but no flattened primers, Woops! The velocity and sd was incredible, 1930 fps on the 18.5 gr load and 2034 fps on the 20.5 gr load, all with single digit sd numbers. Went back to the bench and loaded more with the correct oal and again great velocity and single digit sd numbers but only slight swipes on the hottest load, 2012 fps and 5sd. I thought, this stuff is great for 150s how about some 110s. Loaded some vmax 110s with 20,20.2,20.5,20.8 gr at my usual 2.060 oal and same result, top end load was 2241 fps avg with a 3 sd and decent accuracy, almost as good as my normal h110 load. So now I have some subs loaded up to try with 220 Berrys and 190 sub x, we’ll see how it goes hopefully tomorrow if I can get out to shoot. Can this really be a do it all 300 blk powder, who has tried it and did you have velocities and sd numbers like this?