M.D. Creekmore of The Survivalist Blog talks in this post about how to go about burying guns and magazines against the possibility of confiscation of all, or certain types, of guns. This is a common subject of discussion among gun owners, but amid the current news articles about Obama's stated intention of issuing a package of executive orders in January, now is probably a more appropriate time than we have seen in awhile to renew the discussion.
With no disrespect intended to M.D. or anyone else, if you believe this is a good plan of action, you may want to reconsider. First of all, for what possible future "shtf" event are you planning? I submit that the scenario of cops searching people's homes in search of recently-outlawed guns, which is the only scenario I can envision that the "buried cache" option would be a possible answer to, is in itself a shtf event. I mean, seriously, do you intend to accept that kind of society, here in the USA? If so, then you should stop fooling yourself, sell your semi-auto and other politically incorrect guns, and reinvest those funds into some nice 20" rims for your Prius, because playing those kind of games is gonna get you killed, or in prison.
Let's consider the revolving-cylinder shotguns of a few years back; the "Street Sweeper" and others of that ilk. They were just as legal to buy and own as any other shotgun. The version sold to civilians in the US met all requirements as to minimum barrel and overall length, etc; they only held 12 rounds of standard 12 gauge shotgun ammunition, and were not even semi-automatic. They were actually a double-action-only revolver, and a very bulky and one at that. They were also slow and difficult to reload. All in all, a basic pump shotgun was and is a more effective and usable weapon. Yet, none of that stopped the government from declaring it to be a "Destructive Device", the same classification as an RPG, and therefore illegal to own without jumping through the same hoops that would be required to own a 20mm automatic cannon. There was no grandfather clause, either. One day it was perfectly legal to own, the next day mere possession would get you ten years in federal prison, a ten thousand dollar fine, and a felony conviction on your record, precluding you from ever possessing any kind of gun again, under penalty of more prison time, for life. Sound enough like a "shtf" scenario for you? And believe me, if you have it buried on property you own and they even suspect you have it, they will find it. And if they decide ("they" includes that good-guy sheriff deputy who is a member of your hunting club, btw) that you may have hidden it on your brother's, father's, or best friend's land, or on your hunting lease, they will find it there, too. You think they have anything better to do? This is what they are paid for.
So pull your head out of your illusions, and come up with a real plan. I don't care what that plan is; if you plan to move somewhere more gun-friendly (don't ask me where, because I don't know.), go underground, turn them in but then sell everything and make sure you never again make enough money to have to pay taxes, so as to not support an illegitimate system (aka gulching), or whatever. Just be honest with yourself and your fellow patriots about it, whatever you decide to do.