What's really happening right now is various states are lining up the Constitutional challenges to any potential Federal legislation. Whatever happens will depend on rulings of the Constitutionality of any new law against the 2nd Ammendment, however failing that, a whole slew of challenges could be mounted under State's Rights. The Fed's DON'T have the resources for enforcement without States cooperating because they can't employ the military in domestic police matters.
Now on the sunny side, the rabid bans being put into play by California, Connecticut and New York will set the stage for multiple Constitutional challenges, concurrently and in short order. Those outcomes will draw out federal action on anything that Congress or Obama are able to squeak out this month. Hopefully, the politicos will get bored and move on before anything meaningful can hurt us.
About the "cold dead hands", it won't come to a stand-off over seizure or surrender as long as there is respect for the courts. The day that the courts are set aside by any member of the government, we will have a revolution on our hands.
In the remote chance that a wide ban or surrender order should happen, we need to mount a wide, and I mean WIDE, scale surrender of our persons, overwhelming any ability of enforcement agencies to handle us all. Not a shot need be fired, and they will be counting dockets instead of ballots. Just hold out your hands and tell them you will not comply, then go quietly. Leave no evidence behind to aid your prosecution, but tie up the court's resources. they WILL cry uncle.
Keep this in mind, too. NRA campaign contributions to the last election cycle total several million dollars, with 382 representatives scoring an A on the NRAs report card. Contributions from gun control groups? About $4000. What do you think the House of Representatives will do, even IF the Senate advances a bill?
I expect Obama to opt for Executive order, so that he gets credit even if the courts shoot him down (was that a pun?). In that order he will institute a federal, uniform background check on all firearms transfers. It may be driven by a registration mandate (which none of us should comply with), and it will encompass all gunshow sales, probably hamper mail order, and it will kill classifieds sales by individuals. He will certainly opt for magazine limitations, but it will be sticky if he goes any further than new manufacture. Trying to ban those already in circulation could create millions of felons overnight. Get ready to march on Washington. Then he will deflect a lot of the attention to committees on mental health and the role of the entertainment and video game industries. Those will be hampered by the 1st Ammendment, so only policy and guidelines will result.
Feinsteins bill was DOA and she was too stupid to know it.