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Old August 17, 2021, 06:09 PM   #7
Senior Member
Join Date: August 1, 2021
Posts: 193
I second Hanshi. I have 0.007" deep rifling on my flintlock rifle. My winchester 70 has rather shallow rifling and FAT lands.

From my teachings, deep rifling was for soft lead and cast bullets, so it really digs in and imparts spin. Too hard a bullet, and deep rifling just leads to escaping propellant gas.
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