Originally Posted by Vikingdad
Well I heard of a guy who put a 20 gauge shell in his 12 gauge, it didn't fire, so he jacked another round in and blew his damned gun up.
You cannot shoot ammunition out of a gun that is not made for it. Even the .22LR versus the .22WMR, the chambers are different. You must change cylinders to safely shoot it. No gun manufacturer ever made a single cylinder with little knurled sleeves that you place into each chamber of a revolver- that is just ridiculous as the difference between the two is a mere .002", which means that the sleeve would have to have about a .001" wall thickness (I did not get out my calipers and measure, these dimensions are off the top of my head). A .22 LR will not fit inside a .22 magnum shell case either, the main dimensional difference is that the .22 WMR is longer by about a quarter inch. The WMR has a .224 bullet diameter and the LR has a .222 bullet diameter (which is why WMR will be inherently more accurate in a convertible gun- it has better engagement with the rifling).
Rossi made a prototype with little sleeve thingies? Bullspit.
I know the chambers are different and what I am talking about has nothing to do with the 12/20 burst of a shotgun. I was referencing a guy who I talked to a couple days ago who told me of shooting a 22lr through a mag rifle using a spent mag brass as a chamber bushing. I don't know if it would work and have never tried it and probably never will, just wondered if anyone had heard of that before. I don't know if the lr would fit in a fired mag or not, the mag brass supposedly directs the lr bullet into the rifling, notice I said "supposedly".
They do sell chamber bushings to shoot 22lr in a 22mag, so it isn't impossible I just don't know that it would work with a spent brass bushing.http://mcace.com/adapters.htm
This is one place that has the 22lr to mag adapter.