01-07-2021, 05:16 PM
i had the smaller 1.113" diam shank proof carbon barrel spun onto a howa and cz and smith had no issues, the standard shank diam. i believe is a little larger at 1.2" others can confirm but if you happen to peruse proof research barrels you'll see the two different diameters, it was recommended at the time that i use the smaller of the two diameters to for these

