I keep my CCW in one of these to make sure it doesn't get loose.
I have one in 9mm, .45acp, .38 Special and .416 Rigby.
That would be pretty impressive to carry a .416 Rigby concealed! The ammo alone is hard enough to conceal let alone something large enough to fire it in without being injured. I also wonder how one gets 20+ bad guys to stand in a line to reduce the chance of over penetration with a round where penetration is typically measured in feet not inches.