Note to homeowners: if you buy a gun safe that the bad guys can't open, they'll just pick it up and transport it. Even if it's a really big safe.
Good luck with that! My gun safe is in the basement and it is weighed down with extra lead inside (both spare ammo stored there for the weight and plain lead). They will have to get the thing open to bring it up stairs, since the steps would not support the weight, even if they had enough people to move it. As for opening it, I built a wall around it, so they will have to take the wall down to get at anything but the door. There is nothing in there worth the effort it would take.
I don't know about that My brother had a pretty good sized one and when we put it in place we bolted it down with 5/8 inch bolts. But if someone really wants something and has the time they'll get it. I watched a vid of someone using a angle grinder and metal cutting wheel just cut the side of the safe open making all the locking bolts pointless.
40 tons doesn’t sound that portable to me.
Here’s my gun safe analysis (I have a lot of kids, YMMV)
1) The thieves break in when you’re not home. They have hours to work unobserved on your safe. The guns are gone.
2) They break in when you’re home, asleep. The noise wakes you up. You either do or do not have a gun available that’s not in the safe. If you do not, the safe is irrelevant.
3) They break in when you’re home and you don’t wake up. The first time you know they are there is when they have a gun in your three-year old’s ear. You then open the safe, and the guns are gone.
Seems like a big expense for not much advantage, when you can secure the guns using lock and key to keep kids away.