I've used it quite a bit. Just be sure to get the water thin formulation that will soak in and not form a surface film. I'm convinced it strengthens the wood and it will "find" cracks that you didn't know where there. I've also epoxy bedded the gun afterwards.
Those that don't disassemble their guns would be amazed how cracked up stocks can be internally. Not to mention rust and 100 years of gunk and debris on the mechanism. I know one guy, a collector of sorts, that will never open them up as long as they go bang. Shoots them dry and dirty. It makes me cringe. I'm with you Stan on preventative maintenance.
