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Charles G. asked 8 years ago:
Charles, this pistol has advertised groove-to-groove ID of 0,429 (taken from Cimarron Arms website).
James G.
8 years ago
The best info I can find is that the throats run around .4285 which will handle the .429 bullets.
Mark G.
8 years ago
Charles G, it's 0.429. Hope this helps:)
William L.
8 years ago