Have you tried to find 12ga 00 buckshot for 2 3/4" chambers lately. It is sold out in in every gun shop in my area. Everybody said that its on back order? I did score on a round that is new to me manufactured by Winchester that is a combo of a 1oz. slug and 3 OO buckshot pellets. Velocity is 1150. The round is to enable the shooter to score a hit if the slug is not on target! Buckshot is placed on top of the slug. Have any of you tried this ammo and what are your thoughts? Its a bit pricey at $21 for a 10 pak. PS: I shoot a newly acquired old M97 Winchester.