Firecracking?

[Apollo]

Related question to the Salt bath thread. Talked to Joel K last night. He mentioned that if someone wants to treat their barrel they should do it before firecracking starts. I'm not sure firecracking is - how to see it - or what causes it?
thanks in advance

Stanley

 

[Roger T]

Firecracking

Caused by the heat/pressure of the combustion process. Starting in the throat area of the barrel. Looks like burnt Crocks hide Bore scopes are the best way to see it although when it's bad you can FEEL it when cleaning (rough/tight) from carbon/copper buildup.

 

[Apollo]

Thank you Roger. How detrimental(sp) is firecracking to accuracy? I assume it can't be good when it gets bad, but what about when it first starts? Are there any guidelines/approximations of when it starts in a 30BR? Just curious. Thanks again

 

[Pete Wass]

Something I learned

when I got my borescope; some of what I thought was Firecracking was carbon fouling. After cleaning it with JB and Iosso the Firecracking was gone!