heavy bullets in 223
I can't remember the loads but my Ruger 1B with a nominal 1 in 10 twist has a very long throat so if I want to seat bullets close to the lands I must use 60 gr + bullets. The gun likes 60 gr Nosler and Hornady and especially 63 gr Sierras. I followed the respective manual from each maker with good results. I think 748 and IMR 4895 were good performers. The 70 gr Speer worked ok too. I also use Ken Waters' Pet Loads as a guide. In my gun the 80 gr Sierras just won't stablize - keyhole at very short distances. Good luck.
I can't remember the loads but my Ruger 1B with a nominal 1 in 10 twist has a very long throat so if I want to seat bullets close to the lands I must use 60 gr + bullets. The gun likes 60 gr Nosler and Hornady and especially 63 gr Sierras. I followed the respective manual from each maker with good results. I think 748 and IMR 4895 were good performers. The 70 gr Speer worked ok too. I also use Ken Waters' Pet Loads as a guide. In my gun the 80 gr Sierras just won't stablize - keyhole at very short distances. Good luck.
