Remember it starts out at 600 lbs. After you put a couple thousand rounds in it, and your collection, it will probably double in weight. Make sure you have plenty of extra weight capacity to spare.
Currently, I'm not putting the ammo in the safe. Just guns, money, and other things I don't want a BG to walk off with. He can walk off with ammo if he wants but it's a lot of work to get into my house nowadays and he'd be disappointed I bet. I haven't regretted the safe buy. I worried it would encourage more gun buying but it did not. Now I'm just nuts with the holsters. Geesh those holsters multiple more quickly than the guns. I have more holsters than I have shoes.