Well I shot my new gun over the holiday. It is just a cheap mossberg 12 ga, but it is a dandy. It only came with one choke. Modified. It is very accurate at 50 yards with slugs. The box of slugs say an ic is recommended for best results. I wanted to test it at longer ranges, but the area I wanted for that was occupied. Anyway, how much better would an ic be than the modified that I have? Also, I had to remove the plug bcuz it only allowed 3 shells at a time. It holds up to six. We are allowed to have 5 or 6 in while deer hunting right? The 3 is just for birds I assume?