17, My 10 is a BPS...I really like the ga. and the shotgun is fine, I would prefer a side ejection like the 870, but can live with bottom ejection..as for the the 10 I hand load some for it, plus bought a bunch of ammo for it just after I purchased it..got a couple really good buys on ammo from folks who sold their 10's for one reason or another..I prefer it by far to a 3 1/2 in 12, but the BPS is a heavier gun than my 3 1/2 so recoil is much less..hope you enjoy yours as much as I enjoy mine...