I had a .54 caliber Renegade do the same thing on me many years ago. I thought the barrel was lost. Turns out, it was full of crud. Bore Butter and other stuff to be exact. For years I had treated the barrel with bore butter. Many people use bore butter and have great results with it. I am NOT ONE OF THOSE PEOPLE.

I had hunted with the rifle for years and noticed during practice that the accuracy was not as "dependable" as it used to be. Many more flyer's, etc. I shot a deer that year. An easy shot. Aimed at the shoulder and took it right through the guts. Then the chase was on. We tracked that deer for miles.

After all of that, I then got boiling water, bore brushes, andsolventand began to scrub and clean that barrel. The crud that came out of that bore was terrible. I am sure it was years and years of bore butter build up. Once I got that all out the accuracy was back.

Seeing from Roundball and others instructions I may have been applying it wrong I tried the same barrel all over again with bore butter. Just this week I was going to shoot it and ran a clean patch down the bore and it came back up all "tobacco juice looking." Well all the bore butter is now out of it and Birchwood Casey Sheath is in the bore.

Green Mountain barrels are excellent barrels. The .58 caliber 1-70 twist I have is a very accurate rifle. Also the new stainless steel 1-28 barrels I have are real accurate with sabots. I really like the GMB's.

I make my own wads out of construction felt, and I lube then with a home made lube. Some conicals like wads and some don't. You just have to play with it to see if they like wads.