Other than the work Beagle did with 58 & 60 grain Lyman molds (found in CastPics) I can’t seem to find much information on loading for heavy weight .22’s. My goals are single purpose focused on BR accuracy out of a bolt action production class .222 Remington. That said, I’m sure that .223 data would point me in the right direction.
My question is what powders to use shooting 60 to 80 grain bullets around 1,400 to 1,700 fps. If someone would say that “A” grains of “B” powder gave them “C” velocity would be a big help. I can start low and work up.
The two molds that I’m starting with are the NOE’s 225-61-FN A2 and the 225-72-RN GC B1. The bearing surface is good on those two and the one in nine twist will stabilize them.
The CBA BR results section shows a .223 shot by J Alexander using a 84 grain D.Mos (?) with 5.5 grains of TiteGroup at 1,450 fps (chrno). That was in 2019. He also shot in 2018 with an 84 grain D.Mos with 6.5 grain 4756 @ 1,430 fps (est). In 2019 he shot a .758 agg at 100 yards and a grand agg of .866”. He broke .5” on the fourth match of the 100 yard agg in the 2019 match.
So I have some precedent for wanting 1,450 to 1,700 fps with 62 to 80 grain bullets.
Match results can only give you a glimpse of what’s going on so I’m hoping that there’s someone who would share their powder recommendations for shooting heavy .22 cal bullets for accuracy in a .222 or a .223 bolt gun. Thanks, Bill.
Patience isn’t a virtue, it’s a delay tactic.