Question on M&P45 Barrels markings.

[davebee456]

Question on M&P45 Barrels markings.
When I hold it up this barrel to the light I see a lot of of what looks like streaks but I cleaned this barrel as thorough as possible.
Could what I am seeing be part of the bluing process I have only experiences with hk and glock poly barrels mostly and they have like a mirrior finish.
I did have one stainless rifled 1911 barrel I had was like a mirror in between the grooves

[skyugo]

I'd run a brush and a couple patches through and call it good. Some copper jacket streaking and powder residue is likely to remain even after cleaning. As long as it's shooting accurately i wouldn't worry about it.

[davebee456]

I used alot of ballistol and FP-10, it almost looks too neat to be leading.
I was hoping someone here had the same experience.

[markm]

Are you talking about inside the barrel's riflings?

If so... I had the same issue for the first few hundred rounds.... the barrel copper fouled really bad.... but it settled down after shooting it a bit more.

[GermanSynergy]

I've noticed the same thing.

You can try to use something like Wipe Out foam in the barrel, or just keep shooting it (like I do) and not really worry about it.

[markm]

You can try to use something like Wipe Out foam in the barrel, or just keep shooting it (like I do) and not really worry about it.

Just do this!! Don't go harming the barrel with overly aggressive cleaning or too much chemicals.... Clean it normally and it will settle down.

[GermanSynergy]

Yup- I pretty much only clean pistol barrels now every few thousand rounds (I shoot mostly hardball ammo).

I've noticed no degradation in accuracy or reliability in Gen 3 9mm Glocks and 9/45 M&P's.

[davebee456]

I really thought it might be the blueing process that left these dull streaks in between the rifling I never saw this before, but I only had Sig, Hk and glock..I trust that it wont effect accuracy though, I might try one more time with hoppes.9.

thanks