I haven't bought the gun yet but I would be doing all steel or bismuth shot as the gun would only be used for waterfowl and our laws up here are non-toxic only. As for the amount shot, I would go through a couple of hundred rounds per year. The only problem with buying as that the shops want $35-40 per box of 25 for the stuff and $35 per 10 rounds of the steel alternative. If I could buy a reloader for the 10 gauge I would buy the gun. I'm looking at the Browning BPS by the way.