Looking at other forums, it seems that those who have tried it are satisfied with the results. I am thinking about installing it on an E.R. Shaw barrel that, while extremely accurate, is rather hard to clean.

Anybody tied it?

I have it in a bunch of rifles and have found it works as advertised.

I've done few. I believe they are easier to clean after they have been cleaned several times, but its a hard thing to prove. I believe that most people clean their barrels too often anyway.

One barrel that I can offer as a total success story is a Kimber in 7mm Rem. I was struggling a bit while working up an accuracy load for it, until eventually it clicked in my brain that the barrel was good for a couple, maybe three groups from a clean barrel then it started throwing fliers. Once I realized that it was a fast barrel fouling issue I took my copper solvent to the range and proved that as long as I kept scrubbing it down every two groups it would keep piling them in tight. For what its worth, that's the exact opposite of what I'm used to, normally its a matter of getting it dirty enough to shoot. That's when I described to situation to a friend and he told me about an identical situation he had. He could get a 1/2 box through a particular rifle then accuracy went downhill fast. He told me about DBC and I figured I didn't have much to lose.

After treating it, the bore acted completely different. It doesn't seem to matter how many rounds I run through the barrel it just keeps going. That took my little problem child and made it into one of my favorite rifles.

The other rifles I treated were mostly because I had lots of the treatment left. They shot well enough before-hand and shot well after. I don't remember them being super hard to clean before so its hard to say they are much easier now. One .338 I'm convinced shoots better though.

On custom barrels that both shoot and foul very little I leave them alone. I don't see how that happy state can be improved. I can say that if I ever get a another two-group wonder I'll be treating it.

Something to watch for; when shooting the cooking in loads back off on the powder charge. Pressures will be higher. Also, there's no sense in firing too many cooking loads before cleaning, it makes a black mess and the more you shoot the more scrubbing to get the initial crap out.

If you did a search on 24hourcampfire Barness has written a fair bit about DBC. He posts as Muledeer.

leon - have you ever tried fire lapping??