Safes
There are separate UL ratings for the box and the lock, with the former being rated on both security and fire resistance.
Locks are Group II, II-M, or I rated as "manipulation resistant to 15 minutes of professional manipulation attack", "resistant to 2 hours profesisonal attack" or "manipulation proof." The later generally require an extra final action like turning a butterfly know in the center of the dial to open them. In all but the rarest of cases, the difference between a II and a II-M is theoretical only, unless you're dealing with a pro or someone who has the Mas-Hamilton soft-drill manipulation system. (about $7K, not including the laptop to run it). If I was special ordering a safe, I'd get the II-M, but I wouldn't pass up a good deal because it had a Gorup-II.
Add a "-R" to the rating for resistance to radiological reading of the dials, at the expense of reduced long term durability. Group I locks are rare on home gun safes, except for some of the electronic locks which carry such a rating.
Boxes are rated either "residential security container", or something like TL15. "Residential security container" can include something with 10 gauge walls that can be opened in minutes with hand-carriable power tools. A TL15 takes 15 minutes to either open the door or create a 4" hoe with toold one person can carry. TRTL30 include torch resittance for 30 minutes. TXTL15 is explosive and tool resistance (and I think tool as well). Add an "X6" to the rating and all sides have been tested.
It's rare to get a TL15 or better for a home safe - even the Liberty, Champion, Browning, etc. are just residential security containers. Weight and price go up, and volume go down as you get to higer ratings. There is a wide variety of safe quality and security available with the "residential security container" rating.
Fire ratings are another matter, and everyone seems to use someone other than UL. I belive Liberty uses Omega Point and Champion brags about how the furnace is "independently ownet" (whoppie! they rented the facility where they self certified).
Don't spend too much time worrying about the lock if it's a Group II or better, or the door/bolts if they are 3/4" or so or better (it's not like boxes are breeched by forcing the door to overpower the bolts). Pay attention to the overall weight, thickness of the side door (the one the felon will try to open
, and your ability to bolt it to something solid. The most common medium/high end "home gun safes" are 10 gauge, with some thinner 12 gauge ones available, as well as higher end ones with 3/16" or 1/4" steel walls.
Eastern Security Safe in Mendon has a great selection, and their delivery crew is top notch in terms of customer service. The only negative I have heard about them was a customer who was disappointed the owner did not go beyond the letter of the warrantee and provide some help when his lock failed (lockout) after the expiration of the formal warrantee. In fairness though, I don't think most car dealers will do anything except charge full price for service the day after your warrantee expires.