How can I reduce the kick of my remmington 870 12 guage?

I am a pretty big guy, but when I took my 12 guage to the range and shot a couple 3" 00 Buckshots I felt like my shoulder got hit by a car lol....Anyway, what are my options for reducing the recoil, or kick, of my shotgun? Besides shooting smaller shells...If you could please link me to any ideas you have I would appreciate it, thanks!