Comments on: The 6mm-223 — A Wildcat Worth Considering

By: Lennyd

Lennyd — Sat, 13 Feb 2021 03:52:13 +0000

6mm-223 is great. I’m getting 3126fps over 27gr H335 out of 75gr Sierra hp in a 26” barrel with no pressure signs yet. That’s low end .243 velocities!! It’s a great low recoil accurate hard hitting little round. I’m not at all disappointed in mine.

By: dennis taylor

dennis taylor — Fri, 22 Jan 2021 20:25:32 +0000

The 6mm-223 sounds like just the ticket for my needs because I have buckets of 223 one fired brass that people have given me over the years and I already have a 6mmx 284 for the the long range work so I think I’ll see if I can order a 26″ barrel for my encore rifle and save some wear and tear on my precious 284 brass.

By: PATRICK SCHARF

PATRICK SCHARF — Thu, 19 Nov 2020 20:02:02 +0000

Am in the middle of building a 6mm TCU at the moment. Can’t wait to see how it shoots.

By: Spook

Spook — Sun, 23 Feb 2020 16:52:16 +0000

I have the 6TCU version of this cartridge and cant say enough good about it. Its been used with 55GR noz thru 95 gr Bergs.
Nothing I dont like about it.

By: MH

MH — Mon, 23 Jul 2018 14:22:14 +0000

I considered such a round years ago but dismissed it because it just did not seem to make any sense.

A .224 69 grain SMK has a better BC than a .243 70 grain SMK, plus the 223 case does not have enough powder to hit a sweet spot with much heavier. I mean it will work, sure, but it does not outperform a host of over the counter options.

I’ve always felt the favorite and most popular cartridges have maintained about 3 to 1 bullet to powder weight ratio and that leaves the 223 cartridge with about 26 grains max powder to max out at about 80 grain bullets.

Sure guys run heavier but they struggle with them.

If you want a nice 6mm then I’d recommend a case that holds around 33-38 grains of powder, then you can run bullets between 100 and 115 grains really well.

By: 6milphill

6milphill — Fri, 20 Jul 2018 18:38:05 +0000

I built a 6-223 off a savage axis for coyotes. It hasn’t been the easiest to tune a load for but I have 70gr blitzkings moving 3050fps under 1/2 moa and just finished working up a load for 87gr vmaxs at 2880fps shooting under 1/3 moa. Super fun cartridge to shoot and load for.

By: chevytruck_83

chevytruck_83 — Sat, 28 Oct 2017 16:12:18 +0000

How is case life compared to pushing heavy 223 bullets? I know guys that push the 223 heavies hard only get 2 or 3 shots per case before primers pockets loosen up.

By: Kurz

Kurz — Fri, 27 Oct 2017 16:45:31 +0000

While it’s refreshing to see a smaller capacity cartridge featured, this one is not particularly a new find. This certainly doesn’t detract from the performance, it’s just an observation.

The cartridge was brought to light in 1965 and has been a contributor to the field of varminting as well as small game and deer hunting since then. There is even more to acknowledge with the advent of more and better bullets in current production. It is a cartridge which will be at home in either bolt rifles or gas guns.

Don’t forget the bigger brother 6x47mm which is the .222 Magnum case which offers a bit more velocity but in most situations will not run in an AR platform.

Regards.