AJC1
Member
Curious if you're using a magnum primer or not I know some books don't call for it. This cartridge I would think it may help due to the case volume not the powder used. I normally only use mag primers with large cases or ball powder.H-4198 works really well for me with a 405 bullet. Even at the lowest charge of 27 grains after a dozen or so shots there is only a couple of yellow sticks in barrel.