.20-223AI

[orkan]

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.

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!

 

[Dmagna]

I don't know much about this cartridge but 3175 FPS seems very slow. I was thinking it should be around 34-3600

 

[Mark M.]

Isn't this the same as a tactical twenty?

 

[Dmagna]

Isn't this the same as a tactical twenty?

It's that but improved

 

[orkan]

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.