Bullet Weight: 110 grains Bullet Composition: Compressed tungsten Cartridge Caliber. 223 ammo, due to the fact that it boasts chamber angling equal to a standard 5.56. Specifications: Allegiance Ammunition Silent Strike Subsonic Frangible. I understood the premise that a heavy-for-caliber bullet was needed but nothing off the shelf was readily available. Quote:case: Lake City Surplus, previously firedĬharge Weight Tested: 4 grains to 14 grains. 223 Wylde chamber can actually safely shoot both 5.56 and. Back in the late 90’s, subsonic 5.56/223 ammo that would reliably cycle an unmodified M-16 or AR-15 was only a mythical beast, at least in the circles that I ran in. Here is his original load data that I saved and used. I went heavier than he did as he stopped at 55 grains IIRC. Where there must be caution in the engineering and design is when the bolt unlocking takes place. ![]() Loads, there is a member on the Accurate Reloading Forums named Seafire, his data is the data I started out with and it works well since that time I have used his initial load development for loading a wide range of bullets. The shorter gas tube is closer to the chamber and will have higher pressure to allow it to be sufficient enough to cycle the bolt. Give Blue Dot and Red Dot a try, both work really well for reduced 223. I have been loading and shooting subsonic for years in a 223.
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