Les Snyder Posted June 9, 2017 Share Posted June 9, 2017 I have an on-going project with a 7" 5.56 AR pistol and need to reduce muzzle flash... I've tried linear comps, 3 prong, and A2 muzzle brakes.... I am stumped trying to control muzzle flash.. does anyone have any experience with extremely short barreled 5.56 ARs with quicker burning propellants than 748... something in the H322 range.... possibly with reduced loads or using pistol propellants...I understand that NATO SS109 rounds have a flash retardant propellant... anyone with practical experience comments would be appreciated... regards Les L747 Link to comment Share on other sites More sharing options...
mwray Posted June 9, 2017 Share Posted June 9, 2017 Ever thought about a flash can? Link to comment Share on other sites More sharing options...
M1A4ME Posted June 9, 2017 Share Posted June 9, 2017 I use a lot of IMR4198. Works great in the shorter barreled rifles. I also have a couple AR15 pistols. Works great in them. I do have a Noveske Pig on the 8.5" barreled pistol. Thought I had a picture of the 8.5" but can't seem to find it. This is the 10.5" with a different model "flash can" on it. Link to comment Share on other sites More sharing options...
Les Snyder Posted June 9, 2017 Author Share Posted June 9, 2017 (edited) my test bed was a solid YHM fore end to act as a flash can, with fender washer behind flash hiders... tried the 3 prong, and A2, along with LeVang linear comp... the noise can be somewhat mitigated, but the flash is currently the problem... thank you Edited June 9, 2017 by Les Snyder Link to comment Share on other sites More sharing options...
Kaldor Posted June 9, 2017 Share Posted June 9, 2017 748 is a pretty slow powder in all reality and you are seeing alot of flash simply because you are getting incomplete burn. I cant remember but H322 is a ball powder if memory serves, and it does work well for 223, and it burns way faster than 748, so Id try that before messing with long grain powder like a 4198 that you have to trickle for any reasonable accuracy. Id also stay in the lower 1/3 of the load range for 223 with H322 to help avoid extra flash. Anyway, a single pound of powder is cheap, so Id try that first. Fast burn rate powders, short barrels, and short gas systems work pretty well together. Link to comment Share on other sites More sharing options...
Les Snyder Posted June 9, 2017 Author Share Posted June 9, 2017 Kaldor, M1A... thank you ... I have some 748 and H322 loads from a lot of years ago for a test run...I pretty much load only 9mm for the PCC, but the AR pistol project has been fun to work with....regards Link to comment Share on other sites More sharing options...
Les Snyder Posted June 13, 2017 Author Share Posted June 13, 2017 significant reduction in flash with the H322 and 69SMK in the 7" and almost non existent with the 10.5 and a LeVang linear Link to comment Share on other sites More sharing options...
Kaldor Posted June 14, 2017 Share Posted June 14, 2017 22 hours ago, Les Snyder said: significant reduction in flash with the H322 and 69SMK in the 7" and almost non existent with the 10.5 and a LeVang linear Very nice, Im glad it worked out for you! Link to comment Share on other sites More sharing options...
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