lakelandmusic
Expert
Before I start, I just want to stress that I am not looking to copy anyone's load data. I also know there are some better powders than HS-6 for this development, I just happen to have a lot of it and I'm tired of chasing the better powders that are always out of stock. I have a bunch of RMR 124 grain MPR hollow points. I've already plunk tested a bunch of dummies up to 1.140 in my Beretta, Stribog and Sig P938, though these will be going in my Beretta LTT and Stribog SP9A1 (I prefer 135gr Hornady in the Sig). Brass is Winchester once fired, primers are CCI 500s.
So with that out of the way, the reason for the post is my Hornady manual stops at 5.9 gr @ 1.060 OAL, and the Hodgdon site stops at 6.1 gr @ 1.060 OAL, both using the Hornady XTP as a sample projectile. Since longer OALs are not in the manuals (that I have), and I know people have gone higher in OAL and powder weight safely with HS-6, I am wondering what sweet spots people have found with their +P or near +P defensive loads, that reliably fed. I don't NEED to work up to an ultimate high end on the charge, but I would like to push the RMR 124s to their recommended velocity of 1150-1200 fps for reliable expansion, and I'm curious to see what worked well for others, so I can have some idea of what to expect or not expect.
I'll be starting my development at the middle of the specified range, 5.9 gr @ 1.090", up to 6.2 gr. After those are deemed safe, I would start looking to tweak this series looking for the best velocity with a safe OAL \ higher charge combo. Your time and experiences are appreciated!
So with that out of the way, the reason for the post is my Hornady manual stops at 5.9 gr @ 1.060 OAL, and the Hodgdon site stops at 6.1 gr @ 1.060 OAL, both using the Hornady XTP as a sample projectile. Since longer OALs are not in the manuals (that I have), and I know people have gone higher in OAL and powder weight safely with HS-6, I am wondering what sweet spots people have found with their +P or near +P defensive loads, that reliably fed. I don't NEED to work up to an ultimate high end on the charge, but I would like to push the RMR 124s to their recommended velocity of 1150-1200 fps for reliable expansion, and I'm curious to see what worked well for others, so I can have some idea of what to expect or not expect.
I'll be starting my development at the middle of the specified range, 5.9 gr @ 1.090", up to 6.2 gr. After those are deemed safe, I would start looking to tweak this series looking for the best velocity with a safe OAL \ higher charge combo. Your time and experiences are appreciated!