45 ACP. cases. burnt 'soot'.

[vujade]

I'm looking at some of my fired brass.  They all have a 'black soot' on one side. It's assuming it's some gas blowing back one side of the case after firing. 

 

Is that normal?

 

[Lumber_Jack]

[quote name='vujade' timestamp='1357001341' post='873494']I'm looking at some of my fired brass. They all have a 'black soot' on one side. It's assuming it's some gas blowing back one side of the case after firing. Is that normal? [/quote] It's pretty common, happens a lot. You can try a little more crimp and a little more powder to increase pressure and expand the casing to seal the chamber better. Some faster burning powders can make it worse. Otherwise I wouldn't worry about it. It happens a lot on my revolver cause the case doesn't seal in the cylinder. Just tumble them and it will come off.

[Caster]

Not enough pressure to expand the case to make a good seal. If they run, it's not that big a deal, but it's messy. I have the same issue with some of favorite 45 Colt loads.

[Lumber_Jack]

If the load is reliable and accurate, don't change anything....it's not worth it.

[Jonnin]

mine started doing that when I dropped the load and put in lighter springs.   It seems harmless enough. 

[Garufa]

45's do that.  Worry not, carry on.

[vujade]

Great; thank you guys!  I'll keep loading the 4.3 grains of Bullseye (200 LSWC)!

[lowery100]

I'm using 4.4gr. of Bullseye with 185lswc. I get the same on my cases. Nice soft shooting load.