Thread: 200 gn eld-x 300 win mag AR2225 starting loads

Yep to little can cause problems but you need a big air space for detonation. As I'm running 75.5 with a bullet 25gns heavier and the others are running 80+ then I'd start at 76-78 and work up in the usual .5gns. You will know after the first couple of shots over a chrony whats going on and how far off the mark you are by the speed. I've found the slow powders are pretty predictable say for instance 50fps for half a grain when working up until you start nearing max and the velocity jumps up quick. That's just what I've seen in my rifles. Also noticed recoil seems to jump up when you hit about 2900fps in the calibers I've used but that could be just me or my rifles?