Home Forums Hunting & Shooting Ask The Gunwriters magnum vs standard primers for 300 win mag

I have had magnum primers make a difference in velocity variation, and accuracy, when using RL22 in the 270 Winchester.

Messing with standard primers in magnum hulls is something I have never done since I figure the ammo makers know better than me what ignites large doses of slow burning powders in magnum hulls, so see no need to mess with success.