I expect I may not land “the perfect load” that will stay subsonic and cycle the action unsuppressed but I’ll have a go nonetheless. I got my 200 grain projectiles also, so I may have more than one load to test next time. It’s just odd having a malfunction in an AK. once i saw that, I knew I’d be doing another round of testing. I was kind of expecting I would have some trouble but I wasn’t expecting the samples to be as far out of headspace as they were. FWIW, I got a db meter off amazon for ~$30 or so. Yup! The phone mic’s are equipped with a cut out, so you’re not getting accurate reading over about 100db. My next trip should be with 11.8 grains of 5744, using the same 174 grain FMJBT. I have some 200 grain projectiles enroute. Good for them.Īccuracy was acceptable at 25 yards but I didn’t have enough rounds to play with to get a read on group size I was focused quite a bit on checking for key holing, making sure I had new holes in the target for this trip.Īll 3 charges showed db readings of ~118 db from my meter at my local indoor range. I’ve seen reports on the ’net that others have gotten lower charges to work. 11.7 and 12.0 cycled the action, feeding another round. I had 2 malfunctions one was unsuppressed, didn’t eject the brass. I tried 3 charge weights, using a COAL of just under 2.2”įor my rifle, 11.5 seemed too low. I was able to source all the components at a local show. :roflmao: showed 5744 using between 11-12 grains of powder with a 180 grain projectile. The data I found on the internet, which assures its veracity. I found data for AA1680 and AA5744, the latter looking the most promising. With my shooting buddy assembling a 300 blackout upper for his AR, I had to act. I ended up with some range pickup x39 brass and the die was cast, so to speak. So, I managed to stumble across some numbers with many powders, but I am a bit nervous about pistol powders. I would like it to at least cycle unsuppressed.
SUBSONIC 223 DECIBELS MODS
There is this guy: which is a fair reference point.įirst, my objective: I want a reasonably accurate subsonic load I can shoot out of my AK without any mods other than the suppressor.
It’s there, if you spend ages searching for it, but really tough to verify. The threads were far more ‘true’ than on my US made M1A Socom 16 :roflmao: Anyway, subsonic data has been hard to come by for the 7.62x39. 223 rifles, a couple 308 ARs and got around to the AK most recently. I made a couple Form 1 Suppressors last year in 7.62 caliber, equipped with a rear adapter for a YHM QD mount. I have a 90’s era AK47 in 7.62x39, receiver is US made, and I am not clear on the country of origin for any of the rest of the original parts.
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