GACOP- I just recently experienced the condition you mentioned. Using 36gr. Varmint grenades in a slow twist Ruger #1. They shoot good. Now tried 50gr. VGs and at 100yd they hit the paper with a slight key hole. Out of my 1:9 Mod 12 Sav. both are stablized. Both are .223s. Yeah I know, get rid of the Ruger #1. I've tried to peddle it off for a couple of years, couldn't so decided to play with it some more. Quick