When in doubt, ask an expert
Contact Mike Sayers at TJ's in Alexandria, KY at 859-635-5560. He makes hammer forged barrel liners in all 3 of those twists and can probably tell you what's best for your bullet.
I consult the Greenhill formula all the time for flat base black powder bullets.
Bob Anderson
Company C, 1st Michigan Volunteer Infantry
Small Arms Committee
"I won't be wronged. I won't be insulted. I won't be laid a hand on.
I don't do these things to other people, and I require the same from them."
- John Wayne in "The Shootist", 1976
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