As far as a minimum magazine capacity law I don't see why anyone would want the extra weight of a 30 round magazine or need that many shots. I couldn't imagine someone pulling that off with a 30 round magazine but that would definitely make me nervous if I came across something like that.
In some cases, it's not about "needing" something, but about not having to purchase special gear to hunt when you already own something that would work fine. An SKS with the fixed 10 round magazine would be a perfect deer rifle for someone who was on a budget. I already own lots of 20 and 30 round magazines, I should not have to purchase a 10 or 5 round magazine just to calm someone's false fears. I don't hunt, but my entire family does. I'm watching this thread because my dad is getting older, and that 12 gauge with a deer slug is hard on his shoulders at his age. I offered my lever action 44 magnum, I just happen to have one. It's silly for Hoosiers to not be able to use a normal rifle the rest of the country uses. If some are afraid it will be dangerous, maybe put out a set of safety rules. Perhaps "never point the gun at anything you aren't willing to destroy" or "Always be certain of your target, AND what is beyond it". I spoke to a coworker once about the topic, and he said people might get shot since the bullet traveled so far. I asked him who he knew that shot at something where the bullet would not stop if it over penetrated or missed the deer? He said everyone, if I actually waited until there was a shot perfectly safe I would never get a shot. I shook my head, since he was telling me about his neighbors who were shooting a 44 magnum at targets with a brush pile for a backstop. His wife had to get him because bullets were zipping by her after going through a brush pile. Stupid people will do stupid things, but a rifle round is more likely to drill into the ground and stop as opposed to skipping off it and finding a victim. I am for the center fire rifle hunting, it would allow more clean kills of deer, and less wounded ones that go off and die later. I wonder how many of the deer population die after a bad shot from a shotgun and have the hunter shoot another one because wounded deer that aren't recovered don't count against your deer tags.