Originally Posted by astring
Should I use Retumbo or H1000 or is there something else that is better than those two. Any help or advice would be appreciated, thanks.
Both will work well. Prior to Retumbo, H1000 was and still is one of if not, the best powders in 2 calibers: 300 WM, and 7mm RemMag.
Retumbo has been stated to be THE most consistent and temp stable powder on the market and with 75 grains of it behind a 168 bullet, you can get 3000+ fps.
Re22 and 25 have been among my favorites as well.
VV N165 is yet another great 7mag powder but only if you are rich. You are looking at from 25 to 32 dollars/pound!! EFF THAT!!