I have a Ruger tang safety 220 Swift, 26" varmint barrel, 6-20 Leupold scope, 1-14" twist, manufactured in early 1980's. I am looking at my notes from 1985. I have loaded several bullets and the 60 grain Hornady shot the best.
April 1985: Using 60 grain Hornady. 100 yard group, .31" five shot...