My Oly Whisper (cut down to 10.5 inches) ran best with a 190 SMK over 9.1 grains of H110 lit by a 205M primer. I loaded 'em to 2.250 COL. Never had any luck at all with the 220 SMK in that rifle. It just would not stabilize them. Accuracy with the 190 grainers was ~1 moa.
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