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Old 02-09-2010, 23:53   #1
emt1581
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Possible to alter powder measurements to reduce muzzle flash?

I'm buying an AK but the barrel is only around 12" and it has one hell of a fireball flying out of the end of it because of the unburned powder.

I know it's not really a good idea to alter recipes but in terms of the types of powder or possible grains used...is it possible to reduce muzzle flash/unburned powder?

Thanks!

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Old 02-10-2010, 09:28   #2
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A faster powder should produce less muzzle flash because it will be consumed faster when it is ignited.
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Old 02-10-2010, 10:11   #3
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Right, but I'm wondering if the recipes are for 16+ inch barrels and if so is it possible to manipulate the powder to maximize distance/velocity as much as possible but minimize fireballs.

I have a feeling most of the experienced guys aren't going to touch this thread with a 50' pole!

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Old 02-10-2010, 13:16   #4
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Quote:
Originally Posted by emt1581 View Post
Right, but I'm wondering if the recipes are for 16+ inch barrels and if so is it possible to manipulate the powder to maximize distance/velocity as much as possible but minimize fireballs.

I have a feeling most of the experienced guys aren't going to touch this thread with a 50' pole!

-Emt1581
Not really. Powder combustion is what it is. Slower powders are still burning when tehy exit the bbl, hence larger muzzle flash. A flash suppressor would be the way to go & reload w/ a slightly faster powder.
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Old 02-10-2010, 13:27   #5
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There are a few powders that are less flashy than others. In a 12" rifle it is difficult but in 7.62x39 it is possible. The fastest powder that might work is IMR-4227. It doesn't produce much gas for the gas system though and load data for it has gotten wimpy. It can be loaded to what some of the old load manuals list. Next is H-4198 (also new IMR-4198 is the same powder) Even when using IMR-4198 load with H-4198 load data. This powder will be a compressed load. Easy loading is A-1680. The very best powder is Vhitavuori N-120. The other powders available are too slow. Use CCI #34 or Remington 9 1/2 primers if you can get them.

Last edited by GIockGuy24; 02-10-2010 at 14:39..
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Old 02-10-2010, 13:52   #6
emt1581
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Originally Posted by fredj338 View Post
Not really. Powder combustion is what it is. Slower powders are still burning when tehy exit the bbl, hence larger muzzle flash. A flash suppressor would be the way to go & reload w/ a slightly faster powder.
Yeah, I'm trying to find out if a Phantom FH will work on that threading the Draco has.

Thanks!

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Old 02-10-2010, 13:53   #7
emt1581
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Quote:
Originally Posted by GIockGuy24 View Post
There are a few powders that are less flashy than others. In a 12" rifle it is difficult but i 7.62x39 it is possible. The fastest powder that might work is IMR-4227. It doesn't produce much gas for the gas system though and load data for it has gotten wimpy. It can loaded to what some of the old load manuals list. Next is H-4198 (also new IMR-4198 is the same powder) Even when using IMR-4198 load with H-4198 load data. This powder will be a compressed load. Easy loading is A-1680. The very best powder is Vhitavuori N-120. The other powders available are too slow. Use CCI #34 or Remington 9 1/2 primers if you can get them.
I'll see what I have and what Cabelas has the next time I make the trip up.

Thanks!

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Old 02-10-2010, 14:26   #8
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Quote:
Originally Posted by fredj338 View Post
Not really. Powder combustion is what it is. Slower powders are still burning when tehy exit the bbl, hence larger muzzle flash. A flash suppressor would be the way to go & reload w/ a slightly faster powder.
As usual, Fred gets it correct. You can download a powder burn rate chart off the internet, get appropriate load information from any number of sites and give it a go. Don't forget the flash supressor.

I used to load 223 in a Thompson Contender, 10" bbl. I used IMR 4198, IMH 3031, Win 748. BL-C2 works also if you can find it. Best results for me accuracy-wise were with IMR 4198 in that particular gun. Glad I saved the notes.

Last edited by jaybirdjtt; 02-10-2010 at 14:33..
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