I'm working up load #1 in the new 9.3x62.
I'm shooting 286 gr. Hornadys over RL-15 and as I move up toward max published charges, I'm not seeing the velocities the published data dangled so tantalizingly before me. Part of that is the shorter barrel on my CZ 550 FS, I'm sure. And there's certainly nothing wrong with the speeds I'm getting. But I wonder:
Could I eke out a few more fps with a heavier crimp?
I've never fiddled around much with crimping. The cartridges I've loaded for in the past just didn't call for it. So when I started working up this load I put a little crimp into the cannelure on the Interlock, but didn't really lay it in there. Now that we're near listed max, the bullet is compressing the powder just a little, so I don't need a heavy crimp to prevent recoil from jamming bullets extra deep.
What's been your experience? Would a really stiff crimp give the WLRs a better environment to do their job on the powder, or am I barking up the wrong dog?