I use H4831 with all 140-grain bullets, RL22 with 150-160 grain bullets, and IMR 7828 with the 175-grainers. These three, and any powder with comparable burning rates, will be OK with any of the bullets from 140 up to 175-grains. You could get by with just buying one of these three powders.

The 140-grain Nosler Partition bullet has and will still kill any and all North American big game if driven at between 3300-3400 FPS from the 7mm Rem. Mag., and this velocity is achievable. But it is a very ruinous load for game you want to eat! I have therefore switched to the 175-grain Nosler Partition in my 7mm Rem. Mag. for any use, as it damages less meat. My load is 70 grains of IMR 7828 with this bullet in my Ruger No. 1B with 26" barrel, MV is 3070 FPS.

Caution! This 175-grain load is a heavy load that I developed by working up slowly, one-half grain at a time, starting at 62 grains. I DO NOT KNOW whether you can use it in your rifle or not!! It shoots 1", 3-shotgroups at 200 yards in my No. 1. I have also used 175-grain Sierra and Remington PSPCL bullets with this same powder charge with similar results. But I prefer the Nosler Partition for hunting, as it works regardless of what the quarry may be, from coyotes to grizzly bears.