Wow, that would be scarey! The Pardner I own has fixed choke not the screw in type. I don' t know what the constriction is on the barrel so I won' t use Hevi-shot in it until I am sure of the measurements.

I know of the enhanced performance of the Hevi-shot and it is awesome stuff. I just have to much of the 2 oz 5 shot Federals laying around to use anything else. I got a real bargain on this stuff so I bought a bunch of it. The name of the game is to get them in close anyway and the gun likes the ammo so I guess I will use up what I have before I make any switch.