Performance wise 3 ounces of number 4 buckshot cant compete with 1-1/2 oz of TSS #2 shot. 3 ounces of lead #4 buckshot has about 63 pellets per shell. 1-1/2 ounce of TSS #2 shot has about 81 pellets per shell.
1200 fps lead number 4 buckshot gets 3.70" of gel penetration at 101.9 yards.
1300 fps TSS #2 shot gets 3.70" of gel penetration at 115.5 yards.
