I used to shoot alot, but recently I haven't had the time for trapshooting. I've used an 1100, Ithaca o/u, SKB o/u, Ruger red label o/u, and an 870 wingmaster. My favorite was the 870 wingmaster followed by the Ithaca as a close second. I shot Winchester AA's 7/8 ounce load of 7 1/2. I don't know what most trapshooters shoot now for shells, but at the time I was shooting, everyone shot AA's mainly because they were easy to reload and get several loadings out of each shell.