redish brown spot inside muzzle?

[boomer92266]

I just recently traded for a new Savage axis, it had never been shot. I cleaned it before shooting it and took it out and fired 10 total rounds to get scope set where I want it. I am using Fiocchi shooting dynamics 165 grain soft point. I have a spot just down the side of one rifling from the muzzle to about an inch or so down in the barrel. It's not as wide as the rifling and a short strip of it that has a redish brown color. What could this be?, I put a brush through it about 10 strokes and it didn't change it. Thanks for any help

[sharpshooter]

It's copper fouling.

[Dave Hoback]

Yup! Copper fouling indeed. No worries. No, a brush by itself isn’t going to remove the copper. It gets imbedded, almost soldered into the rifling. Need a caustic Copper solvent like Sweets 7.62, Hoppes, etc. take your pic. I use the Birchwood Casey “2 in 1”. Removes nitro & copper fouling. And....it’s cheap!

[Robinhood]

or some CLR

[Stumpkiller]

Get some Kroil (penetrating oil) and wipe a soaked patch and let it sit overnight. Then a dry patch and then a patch with solvent/stove alcohol (91%) to clear the oil and a dry patch. Then use a copper fouling remover like Barnes CR-10 and a nylon brush (follow the directions). You may be surprised what comes out in the patches using the CR-10. If you have a wood stock be carefull of drips with the alcohol or the CR-10.

[charlie b]

KG12 works really fast on copper. But, wear gloves and use in ventilated area. The other non-ammonia copper solvents work nicely as well.

If more on the cheap side, plain ammonia works. Just don't let it sit in the bore too long.

[boomer92266]

Yup! Copper fouling indeed. No worries. No, a brush by itself isn’t going to remove the copper. It gets imbedded, almost soldered into the rifling. Need a caustic Copper solvent like Sweets 7.62, Hoppes, etc. take your pic. I use the Birchwood Casey “2 in 1”. Removes nitro & copper fouling. And....it’s cheap!

I went today and got some Hoppes bench rest copper solvent, put it on a swab and left it about 30 minutes, ran a patch and it was green. Several patches later they came out clean and the spot is gone. thanks

[Mr.Snerdly]

Yup! Copper fouling indeed. No worries. No, a brush by itself isn’t going to remove the copper. It gets imbedded, almost soldered into the rifling. Need a caustic Copper solvent like Sweets 7.62, Hoppes, etc. take your pic. I use the Birchwood Casey “2 in 1”. Removes nitro & copper fouling. And....it’s cheap!

Is the Birchwood Casey by itself good enough for copper? I have something specifically for copper but if one product is good enough it would be much simpler. Have to clean the gun twice the way I am doing it now.

[Dave Hoback]

Has worked fine for me. It’s pretty caustic stuff. I’m sure there are better, maybe do it a bit quicker. I’ve used Hoppes as well for years. I’m not brand specific. I just get the least expensive I know. This last time it was the Birchwood Casey. If I was getting today, it would be Hoppes. They all work.

[boomer92266]

The area where the copper collected is rough looking, any way to get it smoothed out? I believe thats why copper collected there in only 10 rounds fired. thanks

[gbflyer]

If it shoots good keep shooting it until it doesn’t, then clean it. We as shooters often times get unnecessarily wrapped around the axle over a bright shiny bore. Probably as hard or harder on them scrubbing away with a cleaning rod as it is just to shoot it.

[boomer92266]

I sent Savage the pic, they said it looked like after rifling was done and the finish applied, that the finish didn't blue that area for some reason. Said if I sent it in that they would bench shoot it, if it groups then They can't do anything. I already know it shoots good. Gonna take it out in a few days and shoot a box and see how my shots are. If they still good then I will probably try and keep it but having that spot in there drives me nuts. If the groups open up then it will go back to Savage.