well i let 1 rip this morning and i am impressesd to say the least.fed 7 at a lazered 40,148 in the 10 and not alot of holes outside of the 20.i was almost shocked to see that in the 20.the bad part is i turned the gun into a single shot for awhile unless i can get the part from s&w. the claw that pulls the shell out of the chamber snapped off .sure hope i can get it fixed.