I'm sizing the bullets down to .454" and powdercoating them. My alloy is pure lead with about 3% tin added. Anything above 1200fps results in losing the nose of the bullet and only the base continuing it's path in my wet newspapers media. Tin Star and Trail Boss won't hardly get me over 1000fps from my 20" H&R Handi rifle. IMR 4198 pushes it too fast and so does AA1680. I'm considering A2400 next. Does 14-16gr make sense for 1200fps?
Thanks, Dinny