I was skimming some old posts, and saw this one.
I have the 535 in tactical turkey, and I shoot federal 3" #4 mag shot out of it, and have had good luck with that.
You could'nt pay me to shoot 3.5's out of her. All that would be left of me would be a pair of smokin' boots!
Also, watch out for remington nitro. My gun would'nt cycle it very well.
You can't kill'em sittin' on the couch!