Mossberg 500 rifled barrel....fouling? Please help!!

[LlewellinSetters]

Any ideas as to what is in my barrel? I took the barrel off, and this is closer to where the chamber is and my light is at the other end of the barrel. What do you feel this could be? I've never dealt with fouling before (if that's what this is). I've mostly shot Brenneke KO slugs out of this barrel and occassionaly have shot winchester slugs. I have never done heavy shooting out of the barrel and clean after shooting. Any thoughts? How can I fix it? Thanks!

 

[Scooter22]

The rifled slug barrels are primarily made to use saboted slugs. If you shoot plain lead rifled slugs then you get the leading you got. Get a brass.or bronze brush and some solvent and go to work. DON,T use one of those stainless steel tornado brushes. I've seen barrels really scratched up with those making the fouling worse next time shot.

 

[d2wing]

Yeah, slugs foul a lot.

 

[243winxb]

Plastic from the wad needs a special solvent that will remove it. I use Hoppe's #9 bench rest solvent.

Plastic will build up in choke tubes also. Hard to see, but its there.

 

[Sam1911]

I've mostly shot Brenneke KO slugs out of this barrel and occassionaly have shot winchester slugs.

Those are designed to be fired out of SMOOTH bore shotguns.

Rifled slug barrels are mostly meant to handle saboted slugs where the bullet itself doesn't touch the rifling.

Like these from Federal:

Or these from Remington:



If you shoot traditional "rifled" slugs through that rifled barrel you might not get good accuracy (certainly not as good as sabot slugs) and you'll probably get a lot of that sort of fouling.

 

[243winxb]

I shot both types in a Mossburg 500 rifled barrel. At 100 yds , the difference was 4" vs 8" The sabot grouped better.

 

[mnrivrat]

Just verifying - Shoot Sabot slugs only in a rifled barrel. Not that rifled slugs are unsafe in any manner, but they are not accurate out of rifled barrels, and they will also have lead fouling. Stick with sabot slugs.

 

[4v50 Gary]

Old 12 ga brass brush. Wrap soap-free copper Chore Boy (Safeway has it) around the brush. Scrub, scrub, scrub.

 

[Arkansas Paul]

For light lead fouling like you have, I have used this with pretty good results.

https://www.midwayusa.com/product/3...ead-remover-bore-cleaning-solvent-4-oz-liquid