Originally Posted by Lornce
I don't believe this is accurate.
I've mated turned Nik barrels to /5 cases without clearance issues.
Maybe it's not the /5 that hits the spigot. I've never done it. The issue is that some cranks hit the spigot. Check the fit of the cylinder you have against the crank in the block you have. Rotate the crank. If it hits you have to spend some time grinding.