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Carbon removal.

I had a barrel that was really carboned. wasn't having much luck removing it so I had heard of CLR so thought I would try it. I had heard it could be bad for the barrel but thought what the heck. Anyway next to CLR on the shelf was LIME AWAY so I decided to give it a try. It worked and pretty fast. YMMV
 
I put a SS brake in a little cup of CLR. I figured that I'd leave it in there for an hour or so because it was loaded with carbon. However, I completely forgot about it until the next day. I raised the brake up and it was still pretty black. But when I touched the carbon build-up with a Q-tip, it just floated off. The brake was completely cleaned inside & out. There was no changes or damage to the brake that I could see.
 
CLR has a friendly Ph. Just to be clear there is a lot of negative on CLR... cause it works. And if you take the time to read the directions on most barrel cleaners, most will say not to leave it in the bore for long periods of time.
 
I put a SS brake in a little cup of CLR. I figured that I'd leave it in there for an hour or so because it was loaded with carbon. However, I completely forgot about it until the next day. I raised the brake up and it was still pretty black. But when I touched the carbon build-up with a Q-tip, it just floated off. The brake was completely cleaned inside & out. There was no changes or damage to the brake that I could see.
I use CLR in a ultrasonic cleaner. Leave it in most of the day. Carbon that doesn't dissolve off, wipes right off with a Qtip
 
will CLR hurt a blue barrel?
It stands for Calcium Lime Rust remover. Bluing is a converted type of rust so yes, it will remove bluing.

Removing rust is actually the only thing I found that it was really good for on some shot-out barrels I tested it on.

Apparently some have success with it on muzzle brakes but it wouldn't touch the hard carbon in the neck on those old take-off barrels.
 
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If you don't have good house keeping care of your firearms, Do Not Use CLR. Apparently its common for some induviduals who clean their rifles with CLR don't understand that. You need to remove all of the CLR from the bore, chamber and crown... Without saying keep it out of your action and trigger as you should with all cleaning chemicals.
 
One of the best ways to remove carbon build up is to never let it accumulate in the first place.

I think that is an advantage that Short Range Benchrest Shooters have over many other shooting Disciplines. We are able to clean after every group or target fired. That could be as few as 6 shots.

Also, most of us make cleaning the first order of business after coming from the line between relays, preferably while the barrel is still warm.

I know it is not possible in many other Disciplines. But when you are at the range testing, clean it.
 
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