I'll estimate I shoot 100 rounds every other month and clean with the snake afterwards using Weaponshield, Prolix, or other similar CLP. I clean the snake afterwards, dry it, and pop it back in the original plastic packaging. I clean with rod and patches once a year. This is with all of my barrels, none of which is a premium custom. Used to use rod and patches everytime, but then realized it took longer to get them shooting accurately again!
Just googled this up, from calguns:
"The military may use CLP to clean their bores but that is for reasons of convenience and logistics. Military snipers do not use CLP to clean bolt guns.
http://lightfighter.net/eve/forums/a...4431#650104431
That was in reference to teflon which, when used in the CLP, could leave an undesirable residue.