Re: IMR or H4831 in 300 wby?
I just finished developing a load for a vanguard sub moa for a buddy. Weatherby brass, cci250, 88.5grns H1000 208amax, 3.672" oal, fits one in mag one in the pipe. 2966fps avg 13fps ES, not bad for a 24" barrel. Very high pressure, right at the limits, work from 82grns. Btw, kicks like a bull with barbed wire around his nuts!