Coltaine you must be either very accurate or .30 caliber in diameter. I can see you method working but very messy! LOL!You should be good then. Now, you are firing corrosive ammo, correct?
Make sure after firing you use this method:
Field Combat Method:
Urinate down barrel from breech to muzzle
Run dry patch down barrel
Use nose grease on patch to oil barrel
(Yes, that is a real method).
But you can also use boiling water or windex with ammonia in lieu of Urine.