i picked up a decent cut-down stocked 20 ga m12 ther other day.... the kind i wanted when i was a kid...other than the shortened stock and a polychoke, its in good shape...the take-down was a little loose and i adjusted the interrupted bushing another notch to tighten that... but the barrel is still loose... just a wiggle bit....not side to side, but twist....the barrel band is tight... am i missing something????..s/n denotes a 1937 model... its not shot out and i'll restock with a stock ive got stashed away....where's the model 12 experts????

Pardon me for stating the obvious. Adjust it some more. Keep going until it's tight.

Well, maybe it isn't so obvious, there are about 5 or 6 different bushings that have the locking cuts in a different place around the out side of the bushing. They are marked with a number on the wide side of the bushing that you can't see until you remove the bushing completely off the barrel. Most barrel will have a 0 or 1. By going to one number higher, you have more adjustment to tighten the barrel. Grinding more grooves in the bushing won't do it, you have to replace the bushing. Find a gunsmith that has the proper bushing and you will be back in business. Bill