Re: .338 - 300 RUM pressure problem
I am suggesting you try 50bmg and that it will probably peak out about 102.. but obviously work up to that.. (it will be compressed)
By other angles.. I am referring to the same as said prior.. could be firing pin,brass, primer.. i don't know.. but I don't see why 93 or really even 97 of H1000 would give pressure with that bullet andy your OAL. I don't know what the fix is.. but I do know.. that doesn't sound right.. My edge load is 100gr H1000 @ OAL 4.130 with the 300 berger.. runs right at 2950... NO pressure at all...