Burn marks

[Tommitch]

Question...what could be causing the burn/carbon on the cases like that? They are 38 spl shooting 125gn plated over 4.4 titegroup

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[Rrdswigert]

Perhaps not a tight enough crimp on them. I know my 45Colt would do it if my crimp was not tight enough


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[CodySPowell]

Question...what could be causing the burn/carbon on the cases like that? They are 38 spl shooting 125gn plated over 4.4 titegroup

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That's pretty typical with lighter loads. All my light pistols loads do that.

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[ReneeMicelli]

That's pretty typical with lighter loads. All my light pistols loads do that.

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I agree 100%. Lighter loads do not build enough pressure to 'seal' the chamber fast enough to prevent blowback from coloring the case. All of my competition loads do this. I run them at the lower limits of making power factor and this is one of the side effects. It is not a bad thing as long as you are not getting squibs. Just something to deal with.

[Tommitch]

That was a thought. I remeber seeing a post once with a simular problem and that was one of the answers

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[CodySPowell]

That was a thought. I remeber seeing a post once with a simular problem and that was one of the answers

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Yup, had I not just tumbled all my pistol brass I'd be able to show the difference between a light load and heavy. Especially with 9mm and .38/.357

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[Tommitch]

My 158's in 357 dont do that and im using the same powder but obviously a different weight

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[CodySPowell]

My 158's in 357 dont do that and im using the same powder but obviously a different weight

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Exactly. I push the 158gr XTP's real hard. The 125gr stuff is light target and some magnum loads for fun.

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[Tommitch]

It was just really noticeable on the 38 and not the 357...only reason it caught my attention that much

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[Jay Andrew]

Light loads, the brass isn’t sealing against the chamber walls and allowing the gas to get between the brass case and the chamber.


Reloading...it’s like knitting for men.