Every reload I have made so far has left the spent brass with powder residue all over them after firing. Im pretty sure that means my powder charge is not high enough, correct? I am working up loads for 9mm and .223, all show no signs of any problems, just seems like the cases should not be so dirty.
Powder residue on cases
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Conservidave
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Tell us about your specific loads...
lmstncwby
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It would be nice if we knew what load you are using. Is there any unburnt powder in the barrel? If there is, you may need to go to a hotter primer (magnum vs standard). If you are shooting an AR, try the CCI 41 MilSpec primers. They burn a lot hotter than regular primers.
rcmodel
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Sooty cases are almost always a sign of low pressure starting loads.
Not enough pressure to expand the brass and seal the chamber.
Bump it up, whatever it is.
rc
Not enough pressure to expand the brass and seal the chamber.
Bump it up, whatever it is.
rc
Are you talking about palpable residue or just discoloration? If what you got is a true residue, I'm lost for an explanation. But if what you have is just sort of sooty looking "burn" marks you likely need to up your pressure.
Pictures would be an enormous aid to diagnosis.
Pictures would be an enormous aid to diagnosis.
9mm
Autocomp 5.3gr, 1.120 COL, 115gr Hornady XTP (max is 5.6gr)
Autocomp 5.1gr, 1.225 COL, 115gr Remington plated RN
I have ran the Remington RN down to 1.075 COL and they were still dirty
I have some bullseye loaded from 3.9gr - 4.5gr at 1.100 COL and also 1.125 COL, with 115gr plated RN bullets I haven't shot yet, just trying to work up to a plinking load that won't give me dirty cases. Makes me feel like I'm wasting powder because it isn't burning up. Maybe I'm wrong.
223
H335 21.5 - 22.5gr, 2.200 COL, 55gr Hornady FMJ-BT (max is 24.2gr)
All of these I do very little crimp because I don't want to over crimp. The rifle bullets don't get crimped at all, but I check the case neck tension by pushing on the bullet hard and checking if it moves, it doesn't.
Autocomp 5.3gr, 1.120 COL, 115gr Hornady XTP (max is 5.6gr)
Autocomp 5.1gr, 1.225 COL, 115gr Remington plated RN
I have ran the Remington RN down to 1.075 COL and they were still dirty
I have some bullseye loaded from 3.9gr - 4.5gr at 1.100 COL and also 1.125 COL, with 115gr plated RN bullets I haven't shot yet, just trying to work up to a plinking load that won't give me dirty cases. Makes me feel like I'm wasting powder because it isn't burning up. Maybe I'm wrong.
223
H335 21.5 - 22.5gr, 2.200 COL, 55gr Hornady FMJ-BT (max is 24.2gr)
All of these I do very little crimp because I don't want to over crimp. The rifle bullets don't get crimped at all, but I check the case neck tension by pushing on the bullet hard and checking if it moves, it doesn't.
clearcut
Member
I'm having the same thing with my AR soot to the point of failure to go in to battery.
75 grn, hpbt 21 grn H322
I've upped the powder by 1/2 a grn but I haven't tested them yet.I'll be watching this thread for answers.
CC
75 grn, hpbt 21 grn H322
I've upped the powder by 1/2 a grn but I haven't tested them yet.I'll be watching this thread for answers.
CC
Swampman
Old Fart
Assuming that you're not shooting these out of H&K 93's and MP-5's, I tend to agree that pressures are probably too low for complete obturation.
Conservidave
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Powder burns on my .45 cases are something i have just become used to seeing mainly because of my powder choice....Unique. I also shoot Bullseye in 9mm and see some burn marks but im confident that i am not undercharged in either loads. Some powders perform best at or near max charges and im not familiar with yours you should consider it a part of your workups and before settling on a load. Bump it up and let us know how it went.
1KPerDay
Member
Show us your cases. They general don't come out of the gun sparkly clean.
Sudden Impact
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I get this on factory Remington Express .45 acp. 230 gr. FMJ cases in my 1911.
Does that mean they are low powered or normal? Just wondering?
Sometimes I think powder choice is main factor. YMMV
Does that mean they are low powered or normal? Just wondering?
Sometimes I think powder choice is main factor. YMMV
Hondo 60
Member
Remember, some powders are prone to soot - even at max loads.
I've always had a problem with Accurate #5.
I used it in 45 Colt loads - 10.5 - 11.0 gr under a 200 gr lead pill.
It likes to leave a few flakes of yellow 1/2 burnt powder in the chamber.
Sometimes I'll put up with it, just cuz it's a VERY accurate load.
I've always had a problem with Accurate #5.
I used it in 45 Colt loads - 10.5 - 11.0 gr under a 200 gr lead pill.
It likes to leave a few flakes of yellow 1/2 burnt powder in the chamber.
Sometimes I'll put up with it, just cuz it's a VERY accurate load.
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