Barrel only down to slight interference fit such that Bulgarian 74 FSB was snug when pressed into place. Required about as much force on the press as needed to press in a Bulgy 74 trunnion pin.....not much. The barrel was turned down to where just about all the original half holes from the original FSB were removed....only a small part of them remained afterwords.
If ya can't kill it with a .308, you can always gut 'em
