I HAVE A MOSSBERG ULTIMAG WITH A 24" BARREL AND THE GUN PATTERNS GREAT WITH LEAD FOR TURKEY ,BUT IT DOES NOT WITH STEEL BB ,OR BBB WITH A MOD. CHOKE.DO I NEED A LONGER BARREL? OR DIFFERENT CHOKE WATERFOWL SPECIFIC MAYBE?ANY SUGGESTIONS WOULD BE GREAT. GIONG TO CABELAS THIS WEEKEND TO SPEND SOME CASH 