I wish the 64 gr Winchesters punched baseball size hole....that way I wouldn't have had to track the damn thing into the night. You better send Halfie some of your loads. I forget now, but what is the twist rates for the various weight bullets in .223? Something like 1:7 for under 55gr, 1:9 for 55 to 69gr and 1:12 for more than 69gr...I could have that backassward