I'm with Kodiak on this. We have heard from members who have LEGALLY and successfully taken deer with .22 RFs. Many more who have taken or seen hogs (larger than deer) LEGALLY taken with .22 RF. And these were perfectly successful hunts by responsible hunters who know what they're doing--and talking about. I personally like the way Texas does it. ANY caliber ML or CF is legal for deer, and any caliber is legal for hogs.
Just to play devils advocate here... For those of you that say the gov should be telling us what to do... Some have said that .50 should be minimum. Ok, lets go with that. But it has to use a powder charge of at least 150grs of powder because anything else is just too weak in the energy department. And we have all heard that a RB is inefficient compared to, say, the .338 Lapua, and we all need to at least match that since we don't want the game to suffer after it is hit. And it needs to deliver a set number of ft/lbs of energy on target at 300yds. Speaking of 300 yds, you need to qualify yearly at the said 300 yds to make sure your accuracy is up to par. And since scopes allow better accuracy, as everyone who hasn't been living under a rock knows, all hunting rifles have to be scope sighted. And for those of you who decide that this takes the fun out of ML hunting, well, remember those energy requirements? Hope you weren't planning on using handloads in your CFs. I mean, what kind of an administrative moron would it take to allow handloads when those would allow you to load them light, and then the State wouldn't have any way of keeping a list of what exact load is being used by who, and making sure they provide the proper required energy for responsible hunters, and since you want to be responsible (don't you?) you will use factory ammo only, won't you? And only in the latest greatest offerings, since those are the best available. Ammo shortage? What ammo shortage? Being a responsible hunter, you will understand that you just have to sit this season out if you can't find ammo for the latest state-required caliber out. We're really sorry for the inconvenience, but you're responsible, so we know you'll understand. Maybe, just maybe, you can find a box by next season, and if not, well, as a responsible hunter...
Get my drift yet? I think they need to stay out of your business and mine as long as we're being safe. I can understand the requirement for seasons and bag limits for the sake of making sure we still have game to hunt next year and the year after, but caliber and other details should be up to you and me.