I purchased an older H&R single shot 20 ga shotgun recently to make into a dedicated turkey gun. The gun is chambered for 2 3/4 and I'm debating on whether to try to trade it for one already chambered in 3 inch or to ream it. I figure there should be enough wall thickness to do this but I am not positive. Also anyone have any recommendations or idea on what something like this would cost? I figured for $150 I couldn't go wrong with the gun and if I cant re-chamber it then I could sell it or trade it for the same price/value. There aren't many turkey load offerings in 2 3/4...