1:9 is one rotation every 9 inches. Use masking tape on cleaning rod. If i remember right, think Berger Bullets details how to do this?
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AR-15 question for the forum
- jthomson, 2018-04-08, 11:30
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- Factory can tell you (nm) - Brian T, 2018-04-08, 14:06
- normally the barrel will be marked with just a 7 or 9 or - Gary Reeder, 2018-04-08, 14:02
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Use cleaning rod with dry patch to measure twist.....
- Jeff Spencer, 2018-04-08, 12:09
- Thanks guys, I went ahead and loaded - jthomson, 2018-04-08, 18:02