Ive used 140, 150, and 160 gr Partitions; and 140 and 160 Bitterroots for hunting. Powders have been H4831, IMR4831,RL22,RL25,7828,and maybe some others I can't recall.

This has been spread out over several rifles that saw a fair amount of hunting,and that's the reason for so many powders.

They all worked and for the most part the cartridge has been OK to work with, even if it did require a little adjustment now and then to get it to perc.




The 280 Remington is overbore.

The 7 Rem Mag is over bore.