Hi t roy,

I'm not an engineer....so don't take this as gospel. But from what you described, and particularly with the additional support you enumerated, I don't think you will have any problems at all. Actually most modern homes, (that have been built to code), would have no trouble supporting any reasonable gun safe. Particularly when placed in a corner by load bearing walls.

An additional, worthwhile, "reinforcement" that you might want to consider is in an "anchoring system". A method of securing the safe itself to something substantial in the home. You'd think the weight of the safe, with contents, would be deterent enough. But they are not. A professional thief with a little time, commercial grade dolly, and particularly with some help....can both pry simple screws/bolts from studs....and wheel it out. (If you can get it in...they can get it out!) So a steel attachment (not susceptible or accessible to hardened bolt cutters) imbedded into steel reinforced concrete....might be indicated. If you believe that you live in an area where exposure to this kind of a burglary is unlikely....you could choose not to bother. That's a question you need to answer for yourself.

At any rate...good luck with the new safe!