Does it have a recoil pad or a butt plate? That one should be obvious as to the effect it has on your shoulder.
What shells were you shooting? Ounce and an eight at 1200 fps, the so called 3 dram load? Overkill for clay targets unless you are shooting them past 45 yards or so. Look for the 1 ounce target loads. They recoil much less. Better yet is to reload 7/8 ounce shells, but not everyone is set up to do that.
HTH
Thanks. The gun has the standard plastic end plate that has some deformability. I'm not sure of it's proper name, I'm new to shotguns. I was using Winchester AA target loads, which were the 1 oz 1290 fps shells, #7.5 shot. They were called "lite handicap".
At the moment I couldn't tell you how it fit my shoulder, I'd have to go over to my Dad's and try. The gun is quite light, around 7 lbs, which was part of the reason I chose it; so my arms wouldn't get tired after shooting it for the afternoon.