Can someone tell me what's causing the blackening on my reloads.

[Gadsden]

This only happens on my 6.5 Creedmoor and even though I see it on most of the brass, some comes out relatively clean after being fired. A guy at the range said he thinks it's blowback because the brass isn't forming to the chamber, but if that's the case why doesn't it happen to every round and if it is the problem is there something I'm doing wrong and can I correct it?

 

[O4L]

Is your chamber clean and oil free?

 

[Gadsden]

Is your chamber clean and oil free?

Yessir

 

[Uncle TK]

All Brass is not the same
Sort the rifle brass into like head stamps
Rotate your brass so that each piece gets the same amount of usage

 

[Rustygun]

Are you at the lower end of the powder charge? That would connect with blow by and a sooty case.

 

[Gadsden]

Are you at the lower end of the powder charge? That would connect with blow by and a sooty case.

No, I'm actually a little over the midrange mark. The powder I was using this time is TAC but I've had the same issue using VihtaVouri (N550) and brand new Lapua Brass.

 

[dlbleak]

Are you running a can? Mine come out sooty in the CR. Seems to be the worst of the calibers for it for some reason

 

[chazroh]

Looks like my brass when shooting suppressed

 

[rickm]

I have found 3 things that cause the blacking of brass when fired 1 to low of a powder charge to properly expanded the brass to seal the chamber,2 a over sized chamber and 3rd running a can without a properly adjusted gas block.

 

[Aries]

Do you use a different powder for the 6.5 Creedmore?