If you want accuracy you must pay for it. My .223 target rifle is a Savage 12 BVSS 1:9 twist. Shoots more expensive 52 and 69 grain Sierra MatchKings with equal accuracy. I pay extra for these bullets because eventually I want to make one hole with five bullets. Getting close!
I seat to OAL according to Sierra reloading manual and have tried seating off the lands. There was no difference in accuracy. Casing prep seems critical too: primer pocket uniformity and cleaning, same headstamp, annealing, and Lee collet neck sizing all help.
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