Make sure you get a good outfitter. A good outfitter will get you the permits that you need to cross your gun. Living here in South Texas, I know alot of people that deer hunt and a few that dove hunt in Mexico. The permit is not hard to get, but your still going to wait several hours at the border with there Customs agents. If your going to be going more than once, don't bring the gun back. Leave the gun with your outfitter and and bring it back at the end of the season. Save you the hassle at the border each time. If you find a good outfitter, the dove hunting is excellent. You can shoot hundreds a day. No bag limit in Mexico. If you go on a guided hunt, you usually have to tip your guide. Normally its a couple hundred bucks. I knew a guy that would go once every fews years. Instead of taking his expensive shotguns down there, he would buy a cheap Mossberg and use that as the tip at the end of the hunt. A friend of mine thats a Game Warden here goes to Mexico every year dove hunting. Last year he went to Argentina dove hunting. He said the Dove hunting down there is unbelievable. He said you shoot them till you get tired of shooting or your shoulder can't take it anymore. He said there so thick down there, you easily shoot 2 and 3 a shot. I know thats a little off the subject, just FYI. As far as the times to go, it's pretty much the same as over here. Maybe alittle later do to it being farther south. I'll ask around and see if I can find the names of some good guides. As far as advise, just remember, your not in the U.S. anymore and the rules are different. Go in groups and stay together if your going to be running around in the city.