The 60 grain SSS at 700 fps (the best I ever recorded over my chrony) has about 61 ft-lbs, the 40 grain subsonic 22lr has about 98 ft-lbs. I do not know of anyone who makes such an upper in 5.56.Ī 70 grain 223 bullet moving at 1050 fps has about 170 ft-lbs of energy. This gives it enough pressure to cycle subsonic loads and is adjustable to allow the hotter supersonic loads. On my 18" upper it has the gas port mounted about 4 inches from the front of the chamber. To cycle the 5.56 subsonic rounds you will need an upper that is similar to the 300 whisper. There are factory subsonic loads out there that claim to be able to cycle the action, but they are not reliable. I used an empty buffer and a cut down spring to cycle subsonic 458 socom loads in my ar-15. 300 BLK upper and get "close" to what you currently expect. 22LR can does a better job for a fraction of the cost after the initial purchase. It's not worth the effort, hence why nobody bothers trying to get one to run/cycle on subsonic ammo. Your expectations exceed what's possible with a 5.56 AR. Handloading basic rounds is simple enough if you're paying attention but handloading subsonics isn't something I'd recommend for a new reloader. They're a pain to get out of a barrel and if you miss it the next round is going to be a real surprise. Too little powder an you get yourself a squip. That little powder in a case (not even sure if you can use Trail Boss in 5.56.never looked into it) will be position sensitive and give you inconsistent burn rates/velocities. 22LR suppressor as well and just running that if you want "pellet gun quiet". With the PITA associated with loading your own subsonic 5.56 (not to mention the risk you run of plugging a barrel with an undercharged round), you're better off buying a. 22LR with my 5.56 suppressor do I need to worry about the lead bullets fowling it? It seems like that would be part of the fun of having one.īy the way if I shot. M193 ammo is probably fine normally for what I use it for, but if I put in the money and effort to get a suppressor I would like to make sure it can be "pellet-gun" quite on occasion. I mostly want a suppressor because I shoot a lot and sometimes I forget to bring my ear protection or people come with me and I don't have enough to go around. When you used your sub-sonic rounds were you using the standard buffer in your gun?
Are the subsonic rounds more difficult to reload than normal (ie need to be more precise to make sure to get the muzzle velocity high enough to operate the gun, but still be sub-sonic)? If I reload anyways maybe it does not matter. I have been interested in getting into reloading anyways.
Military brass to keep the cost down for our customers.Like others have said, its not worth the time to load up the bullets. This ammunition also serves as a reduced recoil round for those with physical disabilities and desire less felt recoil.223 Subsonic is such a low pressure round that we utilize once fired U.S. The fact that this subsonic ammo does not cycle in a semi-auto makes it the ultimate stealth round because keeping the bolt closed makes all the sound go through your suppressor. With a proper sound suppressor, this ammunition sounds very close to a pellet gun. This ammunition is designed to be shot suppressed (Silencer) and truly is "Hollywood Quiet." It is engineered for optimal subsonic velocity using a 16" barrel, but shoots great through most 20" barrels as well. This is the largest Hollow Point made in.
223 SUBSONIC FPS SERIES
REQUIRES 1/9" BARREL TWIST TO PROPERLY STABILIZE BULLETīeck Ammunition Silent Operator™ series is engineered to run at Subsonic Velocities (just below the speed of sound) and to be shot with a sound suppressor.
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