Quote Originally Posted by bezzer View Post
I've recently chopped 4" from an AA400 barrel to convert it from a standard to carbine along with a carbine air cylinder. Was going to go from the breech end but went from the muzzle as it's a decent LW barrel and decided I didn't want to disturb the breech end set up. The choke was only in the last inch or so. After facing and recrowning then testing it at the range it's fine, no loss of accuracy, as good if not better than before but that could be down to the carbine suiting me better.
You dont state what calibre the 400 was.