.20-223AI

orkan

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Jun 11, 2010
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Yet another cartridge that H4350 works wonders for. I've been struggling to get this rifle to perform. Been trying historically recommended powders, and it just wasn't coming around. Yesterday I went to the golden child... and it showed once again why it is one of, if not THE most versatile powder on planet earth.

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TS Customs build. Lone Peak Fuzion Ti, McMillan A3A Edge w/Primal Rights hardware package, 9 Twist Proof Carbon Fiber barrel, Triggertech Special, TBAC ultra .22cal

27.5gr of H4350 behind a 55gr Berger LRV at 3175fps from a 20" proof carbon fiber. Powder fills the case 100%, right at the neck/shoulder junction. Best I could get out of this rifle with any other combination was 1/2 to 5/8 MOA. It's now doing a consistent 1/4 to 1/2. Tracks perfectly to 600yds... but as it's my kitty cat calling rifle... I doubt I'll be taking a shot past 300. Shoots about 1.5" at 300yds with ease. Best shooting proof barrel I've owned so far... but it sure was finicky to discover its secret.

Once I got the load dialed in I fired 3. Then pulled a click out and fired one at a different dot. Ready to go!

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I don't know much about this cartridge but 3175 FPS seems very slow.
Why? It's a .20-223AI, not a .20BR. It's a 20" barrel, not a 26. Its a 55gr bullet, not a 40. I can hit 3300fps with varget easily... if I was fine with 3/4moa. (which I'm not)

3 mils to 600yds. It's doing just fine.
 
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