I bought the 10 because I figured I could pay for the cost of it in a season or two of goose hunting in ammo savings even at 10 gauge ammo prices and I don't even hunt geese that much. I hunted with it twice last season for geese, shot an average of near 20 rounds a trip. So, figure 40 rounds fired, 40 dollars at a buck a round for the steel Ts. 3" 12 gauge hevi shot BB was running, at one point, $3.50 a round. It went down to something below 3 bucks. Bismuth and Tungsten matrix is about 5 bucks a round, checked the other day. Anyway, figure $3.00 a round, I'd have spent $120 for goose hunting ammo last season. So, in ammo, I saved 80 bucks. That 10 cost me 200 (H&R). So, another season or two and it's paid for and, frankly, T from a 10 works just as well as hevi shot from a 12 gauge 3".