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Gunsmithing What action to build custom 223 on?

VandelayIndustries

Sergeant of the Hide
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Minuteman
Jan 20, 2022
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For a trainer, and varmint hunting. I like my finished builds with optic to be around 10# or less. Also what twist rate for the barrel? Guys running 7 now and going 80+gr?
 
What twist rate is your barrel? Do you shoot 80s? Or just lighter projectiles?
I've got a 1:7 and shoot 75elds. They group frustratingly, maybe 3/4 inch but they work really well out to 1200-1400 yards. 24" going just shy of 3000fps. Tried some 80s last week just to see if I could group them better but no real improvement in groups. Don't remember the velocities of my ladder but I think I topped out a bit over 2900 with the Bergers
 
I would go 7.5 twist personally and build it off of a falkor mainly because I don’t have one lol.

My 223 is an 8 twists and shoots 80’s excellent, built on a 223. My main varmint rifle is built on a ks sa3R action, and my secondary is built on a lone peak.
 
Just finished one, I used an Impact 737R with a 26" Bartlein heavy varmint in a Foundation Centurian.

You just exceeded that "10# or less" in the first 30% of your rifle 😆.

I've got a 26" Krieger HV on a trued 700 in a McMA4. Some guys just don't know what they're missing with a big ol' .223 rig.
 
I did a solus,
18 inch 7-08 #4 Brux(bugholes)
manners T2(?),
Hawkins Hunter dbm,
timney elite hunter triggger,
Sphur one piece hunting mount
NF 2.5-10

Pretty sure it weighs just at 10 pounds loaded using a polymer mag. Suppressor adds some weight
 
For a trainer, and varmint hunting. I like my finished builds with optic to be around 10# or less. Also what twist rate for the barrel? Guys running 7 now and going 80+gr?

My .223 has a 1:7, which I got to run heavies. I've only tried one 80+ so far and accuracy was abysmal.

However it chugs away with boring regularity with 68 - 77gr stuff across Sierra, Nosler, and Hornady.

Barrels are individuals, but yes in that typically you'll need a 1:7.5 (or faster) for anything over 80gr. If you're trying to run 80+ solely, I'd go 1:7 minimum.
 
75 and 80gr both shoot excellent in 1-7 and 1-8 for me. I did a 223 wylde bolt gun barrel test 5yr ago or so. Barrels sent in from all the big names for thr test.

1-7 and 1-8 both shot 75 eld and 80 eld into stupid small groups.. the 1-8 mullerworks had the slight edge over the rest.

You can't go wrong with either...