Copper Fouling in Glocks?

[CHRracing29]

I just bought a Glock 19 Gen 4 in November and have only put about 250 rounds through it but have noticed a greenish white powder at the end of the barrel.

I was wondering if copper fouling in Glocks is an issue and if I should let some Hoppe's Copper Solvent sit in the barrel overnight to get rid of it?

 

[CHRracing29]

I'm shooting Remington UMC 115gr FMJ's if that has anything to do with it.

 

[Ben86]

Copper fouling is hardly removed with normal solvent. To really get it off you need a copper solvent. This only needs to be done once every few thousand rounds or so, if that.

Glocks do not attract more any more than other guns. With their polygonal rifling they probably have a slower build up. However with lead ammo, they build up with fouling faster than conventional rifling.

Bottom line is don't sweat it.

 

[GLOOB]

Some of that UMC is really thinly plated. It can leave lead and copper fouling in a Glock barrel.

The easiest way to clean it is mechanical. I wet the bore with oil, not solvent. Then I run a bore brush with a little wisp of bronze or copper wool wrapped around it. (Solvent would slowly eat away the wool and the brush).

This sounds stupid if you've never done it, but for some reason it works very well where a bore brush doesn't do anything. A lot of the cast bullet shooters use these copper scrubbing things from walgreens called chore boys.

I would be careful letting any solvent sit overnight. Be sure to know what you're using. Some of the bore solvents can pit a barrel if left too long.