Shooting 100 grain bullets. I need to get a different powder for my 257 Wby. Retumbo is a bust in this rifle, with very poor accuracy... and I've got better than 1/2lb left.
And while RL-19 printed OK groups, it's a little fast for this size case and performance isn't up the Wby's standards (more like 25-06).
I've used IMR-7828 with 100 grain bullets, and had great results, but I've not been able to get it the last couple times I've been to the store. I'm going to go see what they have in stock, but I want to go with a couple alternatives in mind, since the selection is hit or miss. I was thinking I'd look for IMR-7828 or 7828SSC, or RL-22 as my top picks if they have either. Also thought about H-1000, Ramshot Magnum and RL-25, but I'm concerned that the latter may be too slow. So I'm looking for input and recommendations.
Mike