Newhunter1 at work

A muzzle mill goes over the end of the barrel as cayugad says to protect the bore and the load from the elements...

Here is a picture...




http://www.basspro.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10151&catalogId=10001&a mp;langId=-1&partNumber=19942&hvarTarget=search&c mCat=SearchResults

Or as Cayugad indicated you can buy a package of finger cots in the wal-mart pharmacy... but they are a little thinner than these...