I had an interesting difference in two groupings of bullets yesterday. Both 5-shot groups were from a 223 Wylde with a 20-inch Faxon heavy barrel. Sizing was a Redding S-Die with a .244 bushing. The powder was 25 gr Ramshot Tac. CCI small rifle primer. The sub-MOA
group was a 69gr Lapua. The 2 MOA group was a 69 gr Sierra Matchking. Hard to believe that there would be that significant of a difference. Any thoughts or recommendations?