I got my wife an SPR 453 in February for trap. I had target sights mounted and fit a limbsaver pad to it. (There is no factory fit pad.)
It had trouble cycling the first 25 or so rounds, but I now have 200 rounds through it and it shoots like a dream. It's still pretty stiff, but that just means it needs more trips to the range!
I was switching between my SPR 310 and the 453 last time I went to shoot trap. It was amazing the difference in recoil to me. With the new pad, it feels like it has NO recoil whatsoever.