When bolting down your safe, give some consideration as to what type bolts you'll use.
The gun-safe mover/installers strongly recommend using "Power Fastener Wedge Bolts".
You have to use the special masonry-bit for it because it's a non-standard diameter. (especially made for these type bolts)
They claim they've never had a 'wedge bolt' come loose - due to the inherent interference fit with the concrete.
(whereas the red-head expanding bolts can come loose after a few years - without any visual clues)
https://duckduckgo.com/?q=Power+Fastener+Wedge+Bolts&atb=v269-1&ia=web
more info:
https://www.okshooters.com/threads/...d-storm-shelter-recommendations.241458/page-3
The gun-safe mover/installers strongly recommend using "Power Fastener Wedge Bolts".
You have to use the special masonry-bit for it because it's a non-standard diameter. (especially made for these type bolts)
They claim they've never had a 'wedge bolt' come loose - due to the inherent interference fit with the concrete.
(whereas the red-head expanding bolts can come loose after a few years - without any visual clues)
https://duckduckgo.com/?q=Power+Fastener+Wedge+Bolts&atb=v269-1&ia=web
more info:
https://www.okshooters.com/threads/...d-storm-shelter-recommendations.241458/page-3