Yeah, some will be a bit harsh on the ol' shoulder...
Here is a list of what options are available for buckshot (box quantity on the right):
Rio Buckshot Loads
260-RB129 Royal Buck 9 Pellet 12 Ga, #00 Buck, 2-3/4", FPS 1345 5
260-RB12925 Royal Buck 9 Pellet 12 Ga, #00 Buck, 2-3/4", FPS 1345 25
260-RBLR129 Royal Buck Low Recoil 9 Pellet 12 Ga, #00 Buck, 2-3/4", FPS 1200 5
260-RBLR12925 Royal Buck Low Recoil 9 Pellet 12 Ga, #00 Buck, 2-3/4", FPS 1200 25
260-RB1212 Royal Buck 12 Pellet 12 Ga, #1 Buck, 2-3/4", FPS 1345 5
260-RB1221 Royal Buck 21 Pellet 12 Ga, #4 Buck, 2-3/4", FPS 1345 5
260-RB122125 Royal Buck 21 Pellet 12 Ga, #4 Buck, 2-3/4", FPS 1345 25
260-RB1227 Royal Buck 27 Pellet 12 Ga, #4 Buck, 2-3/4", FPS 1345 5
260-RB209 Royal Buck 9 Pellet 20 Ga, #1 Buck, 2-3/4", FPS 1345 25
KGL