![]() Good luck if you test this load data and let me know how it works for you. The idea in using Titegroup for subsonic, presumably suppressed loads is to minimize the gas volume while generating sufficient pressure for stable, repeatable ballistics. The Alliant powder seemed a little quieter than the IMR powder. Posted ApTitegroup (and most other fast pistol powders) will reach max pressures long before you reach a 'normal' rifle velocity. There is still a lot of gas coming out of the ejection port. These loads were not particularly quiet suppressed. I needed to load these rounds with a COL of 2.260”. Also, before you test any load shoot it on paper to make sure your rounds are not keyholding without a suppressor. You need the extra pressure the suppressor provides. Note, you must use a suppressor to get the bolt lock open. Tikka rifles are innovative and durable, designed and manufactured for ultimate accuracy and performance in any situation. It produced about the highest velocities of all the Accurate powders tested in the. As A-2230’s name implies, it’s designed around the. It’s the same powder as Ramshot’s X-Terminator. I suspect this load will produce somewhere around a 1.5 – 2 MOA grouping. Accurate 2230 is a fast-burning, double-base powder. I did a quick 4-shot test to take a look at the accuracy. Here’s the grouping of the IMR load from 25 yards. Note, you will probably have to tweak the load data to your specific firearm. This is the AR I used with a Mystic X suppressor. The standard Gas Hole Diameter of 0.070” works fine. You will need a 1:7 twist barrel at least 16” long with a carbine gas port. Most Accurate or Versatile 223 Load Handloading, Reloading, All loads. I was able to get both Alliant 2000-MR and IMR 4227 working. 223 Remington (Hodgdon Data Using IMR Powder) reloading data with 221 loads. Outlaw State Bullets recommended a load using IMR 4227 for a cycling AR subsonic round. They make a hollow point bullet that will expand at low velocities. That was the only place I found that manufactured anything over 100 grains. 224 bullets from Outlaw State Bullets LLC. Its primary design is for Cowboy Action type. As you can see, the Trail Boss powder is seriously huge. Bullets, casings, scale, sharpie, cotton balls, punch tool, Trail Boss powder. 223 ammo: Everything needed to create a subsonic 55 grain round that will deliver 128 ft/lb energy at 1000 FT/s. The powder in the Atomic load looked very similar to Alliant 2000-MR, so that’s where I started. Here is a general step-by-step on making subsonic. The bullet is 112 grains and the primer looked like a Winchester small rifle primer. I took apart the cartridge and what I found was they are using 15.6 grains of a fine flattened ball powder. ![]() Obviously you need a heavy bullet for cycling an AR 223. The clue the Atomic ammo gave me was they figured out how to get enough pressure at low velocities to cycle the bolt. The Atomic sub ammo gave me around 1150 FPS from the 10.5” barrel and around 1500 FPS from the 16” barrel. ![]() The ammo cycled and locked the bolt open in both the 10.5” and 16” barrels. I could not get the Atomic subs to stabilize with my fast twist 1:7 10.5” or 16” 5.56 NATO barrels. I had high hopes for the sub ammo, but it didn’t work. I ended up purchasing some Atomic Tactical Cycling 5.56 NATO Subsonic Ammunition from Midway at $60 for a box of 50. Some of the load data posted that claimed to cycle an unmodified AR did not work for me. It seems a few others have tried this and ended up not having much luck either. I tried to find some load data but had no luck. 223 subsonic load working with a standard AR15 platform that cycles. 338BR and the 510 W though.For the past 7 months I have been trying to get a. 338LM, 6.5X47, 308 etc through cans and it works great. This is just my opinion based on quite a few years of playing with subsonics and suppressors. That way you can take care of any close in stuff quietly and save a lot of time on loading a basic 22LR equivalent in your rifle. I know some guys think they should have subs for any gun they carry with a can but it makes more sense to carry a suppressed. You've got a 300gr subsonic telephone pole coming out of the barrel and with good loading and workup with your rifle you can hit dogs out to 500yds with a heavy bullet and do it quietly. 338 BR upper on might make it worth doing. On the other hand taking your AR and putting a. You don't gain enough with the subs to make it worthwhile when you're limited to. I think more realistically you build a dedicated subsonic rifle and just shoot regular HV ammo out of your. ![]()
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