#Subsonic 223 recipes 90 grain plus#

You'll still need a really heavy bullet & the right slower pistol powder that produces enough gas at the gas port. Reducing carrier weight, buffer weight, spring, increasing gas port size, adding a suppressor for more pressure, all of those things can help. A 100gr sub would give energy in the range of a 380 pistol round. Even then I'm sure it would be hit or miss depending on the gas system of the gun & gas port size. There are 1 or 2 companies I've seen that sell a 100gr+ subsonic that they claim will cycle an AR. You'll have no issue creating a sub load, cycling an AR is the major challenge here, if that's part of the goal. If you need to do pest control, it will be much more cost effective to just get a.

#Subsonic 223 recipes 90 grain plus#

Plus you can run very capable 125 or 150 grain supersonics in it. 300 BO exists and delivers something like three times the energy on target. And they already make 22LR subsonics.Īs others have said.

It's a goal that even if you manage to accomplish, you end up with what basically amounts to a 22LR for energy. 223/5.56 AR that was essentially useless for doing anything but running subsonics.

You'd basically need a lightened buffer, lighter spring, and a tuned gas system to generate enough back pressure to make the first point work. So not Titegroup or Bullseye and also not H110. Pistol powder yes, but something in the lil'gun or 2400 burn rate range that also doesn't mind being very low density. It would take a very short barrel, a suppressor, and an absolutely perfect balance of pressure and velocity to cycle. I am thoroughly convinced of a few things: The highest velocity at almost 1500 fps didn't even begin to cycle. In my 16' AR, the lowest I got to was 1055 fps. Have fun.I tested it last weekend with AA#5 and 77 grain cast bullets. Through and through torso shots, accurate enough for head shots.Īnd search for '308 subsonic bullseye' while you're at it. They work well on deer, ME close to a 9mm round. Fed through an LTR w/ a 20' barrel I occasionally get a sonic crack, especially with a warm barrel, which I attribute to not having the extra 4' of barrel slowing down the bullet. All I hear is trigger breaking and 'thump.' I've shot hundreds of 'em. These do really well out of a suppressed 24' Rem 700 PSS, no keyholes, at about 1050-1080 fps. Lapua SS runs around $3 a round, TTI was about half that (they still in business?), EBR Thumper about a buck a round, there are several others in the game. Stock/OEM subtonics seem to use VV powders, less than 10 grains (I bought and disassembled a few) as far as I can tell, but, as they're proprietary, the mfr.'s not going to tell you what powder they use. Some argue for bulky powders, others for FAST powders so as not to cause detonation when what you want is just a quick pressure spike. Load I decided on is a 180 grain Sierra RN, 2.700' OAL, Win Standard primers and 8.2 grains of BULLSEYE. Thanks normbal.ĭo some googling on this one, it's been beaten to death, especially in Finland of all places where buying a suppressor is cash and carry. I have found that using Bullseye for cast 44 mag subsonic resulted in leading in the bore. You need to know the range to the target very well in order to ensure correct shot placement.Įdited to add I forgot about using Bulleye.

With a 200 yard zero, you will still be at least a foot high at 100 yards. Past 200 yards a subsonic bullet is moving downhill very quickly. It has been my experience that you can expect your groups to average 1.5 to 2 times larger with subsonic ammo in a gun intended for supersonic ammo.

Magnum primers give more consistent ignition and lower standard deviations. 1-10 is good for round noise 220 grain bullets, but they will keyhole with a 1-12 twist. Start with about 15 grains in a 308 case and a 220 grain bullet.Įnsure your twist is right. H110, V110, 4227 and any other magnum pistol powder is good for subsonic rifle loads. I use WC820, it is like H110 and entirely safe to use in reduced loads in rifles. Lowers speeds give less power, higher trajectories and the potential for increased yawing which can be hazardous to your silencer if you are using one. Faster than 1100 fps and you risk a sonic boom especially in colder temperatures. First, no matter what data you use, you will need a chronograph.