Originally Posted by DanSavage Key, you don't use the.220 number you are shooting .243, at bench rest matches they use a scale with rings the size of the caliber you shoot to measure a group. You zero your calipers at .243, then measure furthest out side edges. Sent from my LGL34C using Tapatalk Sent from my LGL34C using Tapatalk
There really is an excuse for everything!
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