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Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Ridge Runner, Feb 28, 2008.
whats the optimal twist for a 20 tac shooting 40 gr bullets? Hart only offers a 9 and a 12. thanx
Check out this article, it says 1/12 for up to 40gr.
Twenty Caliber Cartridge Guide
Another good place to check is the Berger bullet page to see what they recomand for thiers.