Hi, I am pretty new to slug guns with rifled barrels. I will be buying a new H&R Ultra Slug Hunter and a Nikon Prostaff 3-9 to mount on it. This is probably a pretty noob-ish question but, Do any of you do a barrel break-in with your slug guns like you would do with a new rifle? If so, how should I go about it? Also, what else can I do to improve the accuracy? I'd like to have it shooting as accurately as possible. My ultimate goal is to get 4" groups at 200 yards. Thanks in advance, Evan S.