Murphy, I used to hunt with a buddy's brother who often fired 3" magnum shells in his dads' Flues 20 guage. He complained about the recoil, but got away with it. On the other hand, I have a 16 ga. and a 20 ga. Flues that I picked up as parts guns. Both have ruptured barrels. Both split badly in the forend area and it is hard to imagine that they didn't hurt the shooters left hand. If you saw how thin the barrel walls on a Flues are in that area, you might be hesitant to shoot anything but the correct length low pressure shells in your gun. I know for certain that my friends' brother was both foolish and very lucky. Now, I have no idea what caused these two guns to let loose. It may have been due to dents or obstructions or simply a few hundred more p.s.i. than they could handle. I hope you'll consider having your barrels checked for both chamber length and chambers reamed to 2 3/4" by a competent gunsmith.
