BOOMSMACK44
New Member
Switching over from lead to copper for California. I have a weatherby accumark 7mm rem mag. 1-9.5 twist barrel. Trying to figure a good powder combination for load development. I have RL 19 and 22 and IMR 4350. Been practically impossible to find RL 23 which I've heard is the most temp stable powder. Has anyone used 19 or 22 for the 146gr hammer hunters?