Originally Posted by creophus
Looking for powder suggestions for loading the BIG magnums.
Calibers that I'd like to consider would be:
338-378 Weatherby Magnum
340 Weatherby Magnum
Basically all the big stuff just under 50 BMG.
What do you guys like/suggest?
The 375 h@h can run as slow as 4350 class powder and that is about it- it simply doesn't have case capacity for slower. I personally run I 4320 and I 4350 with mine using jacketed, and rl7 with lead.
the 338-378 will take retumbo, rl25, and the 50 cal powders
the 340 wby will go to 7828 and rl22, maybe a bit slower, but not that much
the 338 win wasn't mentioned but I use rl 19 in mine with a 225 and get the same speed as most books show for either the 338win OR 340 wby-- go figure
the 416 rigby takes a rather slow powder because of the cavern they put on it because of cordite. rl22 and 4831 work well here.
The 416 taylor is similar to the 416 rem and 375 h@h with 4350 as slow as you go.
I's rather own a 338(either win or rum) or 375 rum than most of the above save the 375h@h. The 416 rum wildcat (whatever they are calling it I simply don't care) would be a great 416, but the rigby would be good too.