Benelli Nova / improved Cylinder / Winchester 1200 v 7 shot 1 1/8 oz.
Recently found out that that any tighter with steel is bad for your barrel/choke at least according to Benelliusa.com
Not true....I shoot nothing but Benelli, and the best choke for most steel loads is modified....In fact, on the tube it says, Steel Ok....Ckeck those shells too....Steel does not come in size 7 1/2....You could've been shooting lead.....Meaning, your pattern would be larger with a IC tube.