Yep...I do that with mine...a good wipe down with a heavier oil...30 wt car oil works well, then into the safe. No fingerprints to start the rusting process after the wipe-down.
Be careful what you lay your guns down on...some fabrics can and do hold moisture...leather has acids in it due to the tanning process...sheepskin "gun sleeves" hold moisture...
I use a plane wood rack, finished in two coats of poly....and I make sure that the gun room does suffer from extreme temperature variations to avoid condensation issues. In that regard, a garage is not a good place for storage., but your closet might be good, no matter what your wife says! Rod
Cherish our flag, honor it, defend what it stands for or get the hell out. Our Freedoms are not free, they've been paid for many times over by heros in uniform. Far better men than I, died that we could be FREE.
USAF FAC, 5th Spl Forces, An Loc, lll Corps, RVN, 69-70, Vietnam Vet '69-'73