Haven't shot enough to reapply, having it in 3 of my 17hmrs, 2 Marlins and a CZ452 American, has a lot to do with that, though! It's easy to apply, the secret is to have the bore well broken in, then cleaned super clean....warm the barrel, some use a heat gun or hair dryer, I used hot water run on the barrel cuz it's handi to my shop in the basement. Once the barrel is hot, just apply the moly oil and paste with a bore mop or patch, swabbing the bore several times to coat it well, let it sit for a couple hours and wipe it out. Shoot, clean and repeat 2 more times and it's good for a long time according to most users.
http://actionsbyt.blogspot.com/2005/05/moly-fusion.html