As long as you are not shooting it through a choke tighter than MOD you should be fine. Steel is going to pattern tighter than lead any way. I never shot any steel through mine. I shoot maybe 10 or 20geese a year and figure for that many shots I'll splurge for the better performance you get with hevi-shot. The BAP page on the H&R site list to different MOD tubes for steel and lead. I can't check mine since I traded it a while back but if you unscrew your tube I think mine was marked steel.