Thread: Rebore.

Originally Posted by akaroa1

The variable spring back on an existing profiled, bored and reamed barrel means that pulling a button through it would give a significant variation in the final bore and groove sizes.
The muzzle which is usually the thinnest section of the barrel would be bell mouthed, because it is thinnest there is less metal too spring it back.

Pull it through backwards then - problem solved!

Look for solutions, not problems.

Might be sarcasm, might not....