Breaking in the barrel this weekend at 100yrds, ok groups 1/2+." Using 18.1 grain to fire form new cases. Haven't bedded action yet just lug area.
Using H322 instead of H4198, it is easy to funnel in the small neck. Recommended by reloading shop.
Do these powders offer similar performance, and should load be the same charge with either powder?
When switching from Hornady 40gr to Sierra 39 grain bullets, powder loads can remain the same?
Will work up loads on fire formed cases.