Just curious on what turns up in speed & cycling conditions. These loads are very nice and quiet (TO ME) without a suppressor, through my Rem7615 pump 223/5.56. I kept increasing the charge until it reached the IMR recommended starting charge of 30 less than case capacity BELOW BULLET BASE, with only 3 or 4 more squibs to push out. IMR recommends always consulting for the most accurate, up-to-date data. In rifles, this powder delivers excellent velocity and accuracy in such cartridges as the 22 Hornet and 221 Fireball. If a pistol says Magnum, IMR 4227 is the choice for true magnum velocities and performance. Well the loads are loaded no backing out.will post after the test. With a properly sized wooden dowel it took only a moment to push out. IMR 4227 is a medium burn speed, magnum pistol propellant. Maybe the data should of read: 8.8C not 8.8c. IMR states that 8.8c will work with a oal of 1.125" with this bullet.
![subsonic 223 imr 4227 subsonic 223 imr 4227](https://gunstuff.tv/wp-content/uploads/2020/02/26142.png)
This load did however work with the 1.16" OAL and that is what will be tested on the next trip out.
SUBSONIC 223 IMR 4227 FULL
trying to get the full stroke on "This load" was not happening like the last load with Unique powder. This powder is very fine and fills the case quite full.
![subsonic 223 imr 4227 subsonic 223 imr 4227](https://www.thereloadersnetwork.com/wp-content/uploads/2021/03/IMG_20210227_184520-636x358.jpg)
I adjusted the seating die to a 124gr already loaded and got ready to seat my bullets. 18" of space at the top of the case, before I set the bullet at an OAL of 1.14" 5grs hoping that the weapon would eject and cycle with the heavier bullet and there was about.
![subsonic 223 imr 4227 subsonic 223 imr 4227](https://www.thereloadersnetwork.com/wp-content/uploads/2020/12/cast-subs-300-blk-out.jpg)
SUBSONIC 223 IMR 4227 MANUAL
300 AAC Blackout caliber getting into more subsonic and heavier grain weight data two areas that are typically lacking for information.Īll of Sierra Bullets’ new data can be read below.I looked at an OLD IMR data manual that I have and see that the velocity should be "Sub-Sonic" in its speed and the pressure is so low, that I had to load a few, just to see if they will cycle in the Springfield.įlipped a coin to see if the 115 or the 124 plated got the nod and it came up, the 124gr RN. They recently published updated and expanded data for the. Simple solution… reload! Well, there is not much extensive data for reloading either, but Sierra Bullets is trying to help change that. If you are in the middle of nowhere and need ammo, this may not be readily available. For one, this is not a standard gun store shelf caliber. 300 AAC Blackout 205 Grain Subsonic Hunting Tipped Brass Cased Centerfire. With all of the positives I have just stated, there have to be some negatives. We have some IMR 4227 and Federal gold match AR small rifle primers to load. SKU: N/A Category: Powders Tags: 357 mag imr 4227 powder, 44 magnum imr 4227 powder, charge weight for 308 with imr 4227 powder, dupont imr 4227 smokeless powder, imr 4227 a good powder for, imr 4227 not working in savage smokeless powder muzzleloader, imr 4227 powder. Most shooters use it in varying capacities from 200 yards or less. 300 AAC Blackout 190 Grain Subsonic eXpanding Centerfire Rifle Ammunition 500 RDS 650. Since you can work with bullets from 110 grain up to 240 grain in both hypersonic and subsonic loads it boasts tremendous, close-range versatility. Frontier Cartridge features Hornady bullets in 223 Rem and 5. A crowd favorite for pig hunting, deer hunting and general subsonic fun with silencers, it remains a strong choice for many shooters. I have used Dupont/IMR PB with success in very light loads for the 223. I predict ignition and burn will be erratic thus velocities will be also. Although the military has not truly fallen in love with the caliber, civilians absolutely have. FWIW It is my considered opinion that you will not be happy with 4227 for anything near subsonic loads in your 223's. 30 caliber cartridge in an M4 platform by simply changing the barrel, but utilizing the same magazines. Originally, the cartridge was developed by Remington and Advanced Armament Corporation (AAC) to provide the military with a. 300 AAC Blackout is 7.62x35mm metrically), but you have the popular American platform of an AR-15. It has very similar ballistics to a traditional AK-47 chambered for 7.62x39mm (. Hodgdon H110 Hodgdon H4227 Hodgdon LilGun Improved Military Rifle IMR 4227 Improved.
![subsonic 223 imr 4227 subsonic 223 imr 4227](http://img.youtube.com/vi/-GLm74VPZVM/0.jpg)
300 AAC Blackout because of its versatility and available grain weight range. 224) 55gr FMJ Bullets w/ Cannelure 500-ct 11 223 and Magtech Range. velocities respectively ranged from 1040 to near 1200 FPS as the charge climbed. Also I noticed that the 4227 seemed to be inconsistent on velocities. Many AR-15 enthusiasts and hunters have a strong appreciation for. When I started shooting the 4227 loads (17.0, 17.2, 17.4, 17.6, 17.8) with the XTP's, the first shot would chrony 50 or so FPS faster than the next 3 shots, every time. Anybody have any experience with Subsonic 223 if so do you have a recipe I want to try and make some an don't have a clue what to use I have LilGun, Trailboss, IMR 8208 XBR, IMR 4895, 4320, 4198, 4227, 4350 Bullets in 50gr, 55gr Hollow and soft point and 55gr FMJ, CCI 400 and 450 Small rifle Primers or is not possible.