![Lightshot screenshot google chrome extension](https://loka.nahovitsyn.com/224.jpg)
![subsonic 223 rounds subsonic 223 rounds](https://www.gunworks.co.nz/persistent/catalogue_images/products/hrnfrontier223.jpg)
The loading is done inversely to the standard practice with normal loads and is best executed by loading from a higher Velocity usually in the 1300-1400 fps range towards the lower level.Ĭonfirm statistically, with proper number of rounds per iteration (min 10 rounds) by measuring the velocity with a chronograph and verify standard deviations and extreme spreads to make absolutely sure that no supersonic “flyers” occur. Neck-sizing the cases to ensure proper obturationĪdding Fillers to keep the powder on the primer side of the case (Dacron® or Pufflon® – see below). To ensure the best highest possible loading density, select the bulkiest powder with the lowest bulk density (weight/Volume).Įxtruded flake, or -tubular or -multi perforated powders, are usually the recommended types, however there are some exceptions utilizing special spherical/Ball® powders. However, there are exceptions involving slower burning powders with excellent ignition characteristics such as our Accurate 5744® In most cases extremely fast burning Handgun/Shotgun powders are the better options. Begin at the recommended minimum/Start loads and incrementally load lower towards the subsonic range, of between 10 Fps. Use any well-known Cast Bullet Publication, such as Lyman®, Speer® etc as a guide with the above equivalent powders. Use only powders with good ignition characteristics. Warning: - Since fast burning powders are used, it results in very low loading densities Therefore the possibility of double charging is very high!! - Please take extra precautions to prevent this from occurring. Subsonic loads using standard components will not cycle high power, semi auto rifles. Therefore, it is actually a waste /moot point shooting with these designs at subsonic velocities. Projectiles with sharp pointed ogive’s do not make good subsonic projectiles becauseĮxternal and Terminal ballistics at subsonic velocities does not exploit the design features of high BC jacketed SP or HP-BT bullets. This leads to low loading densities, which might cause ignition problems.īecause the requirement is to have subsonic velocities while maintaining the best possible combustion efficiency, the velocity should be kept as close as possible to the sonic threshold for the specific conditions, preferably between 1025 Fps to 1100 Fps. Therefore faster more efficient burning powders are required. This means the combustion efficiency is not good. I messed with it, then moved on to other projects.The practice of down loading rifle calibers to subsonic velocity levels must be approached in a special way.Īt subsonic velocities the chamber pressure is extremely low in most rifle calibers. Its not really very loud, and down range difficult to determine where it came from.
#SUBSONIC 223 ROUNDS FULL#
Honestly a full powdered 223 thru a can is like a 22lr out of a rifle. In the subsonic arena weight is where its at, since your velocity is fixed, more weight more energy.
![subsonic 223 rounds subsonic 223 rounds](https://www.primaryarms.com/SSP%20Applications/NetSuite%20Inc.%20-%20SCA%20Mont%20Blanc/Development/img/00429_00.jpg)
And a 223 bullet will be more aerodynamic. 65gr is better than the 40gr used in a 22lr subsonic. This would create feed issues obviously.Īre they worth messing with? Maybe. I read some were loading them backwards eliminating the stability issue. Seems a flat based spitzer you might get some more weight before it gets unstable, vs a boat tail. Tracers are going to be long for their weight so probably not work. That is not absolute on weight, it would depend on the bullet and how its made. Heaviest I could go was some 65 gr bullets I had, 1-9 twist, 69 gr were key holing and all over the place at just 10 yds. A bullet that will stabilize in a barrel at full velocity may not at subsonic. Trailboss seems to be the answer to what powder to use.Īn issue you will run into is barrel twist.
![subsonic 223 rounds subsonic 223 rounds](https://s3.amazonaws.com/mgm-content/sites/armslist/uploads/posts/2019/12/26/10939671_02_690_rounds_of_223_subsonic__640.jpg)
I messed with some subsonic 223 loads a while back.
![Lightshot screenshot google chrome extension](https://loka.nahovitsyn.com/224.jpg)