Handloading subsonic .223

Steve Johnson
by Steve Johnson

Blackfork is trying to develop subsonic loads for his .223:

I looked on the Hogden site and found a subsonic load: 3.1 grains of Titegroup and a 55 grain bullet. I tried 3.1 grains of Titegroup under a Nosler 69. It works, doesn’t cycle the rifle but it’s quiet. The gun kind of rattles a bit when it goes off. Kind of a beefed up .22lr. About six inches under the zero for my normal ammo.

As he said, a problem is that a subsonic 55 grain has about the same muzzle energy as a High velocity .22 Long Rifle. On the other hand a heavy 77 grain bullet will not give great accuracy unless the correct barrel twist is used. The Shooting Times says a 1:8 twist rate is the minimum need to stabilize a 77 grain Sierra MatchKing.

I look forward to following BlackFork’s progress.

More at BlackFork

Hat Tip: Snowflakes in Hell

Steve Johnson
Steve Johnson

I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!

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3 of 4 comments
  • Jdun1911 Jdun1911 on Dec 31, 2008

    He has to careful when loading reloading rifle caliber to subsonic.

    Make sure the bullet clear the barrel with each shot or bad things will happen.

    • Steve Steve on Dec 31, 2008

      @jdun1911 jdun1911, good point. You really need to ensure the projectile leaves the barrel. A bulge in the barrel cause by a bullet hitting a stuck bullet will kill accuracy,

  • Jdun1911 Jdun1911 on Dec 31, 2008

    I should have proof read. I mean: "reloading rifle caliber to subsonic." not "loading reloading rifle caliber to subsonic."

    I read many posts in the past where subsonic rifle rounds cause KB!. In one case someone die of it. Make sure the bullet clear the barrel before squeezing another round!