View Full Version : barrel twist advise

03-12-2007, 8:40 PM
on a 24" barrel, what is the best barrel twist for multipurpose shooting. at present, i'm only looking to shoot it at the range. not sure what the longest distance is at burro but it is where i primarily go. i'd imagine its 200yrd at most.

I plan on scoping it out and want it to be accurate as possible.

oh, its for 223. 55gr is usually what i buy. haven't really picked out a brand yet, i'm new to all this.

i saw one at 1/8 and 1/10 twist. which to get?

03-12-2007, 9:40 PM
1/9 is generally considered the best "all around" barrel twist.

But of the 2 you listed I'd go with the 1/8. Gives you more versatility if you want to shoot some heavier bullets in the future.

1/10 is good for 55gr and lighter, varmint bullets and not a lot else.

03-12-2007, 10:01 PM
+1 on a 1:9 twist you can shoot almost any bullet out of it!

03-12-2007, 11:03 PM
thanks, appreciate it.

03-13-2007, 5:53 PM
when would i want to shoot a heavier bullet?
i just realized that i have nothing but 55gr.

03-13-2007, 6:00 PM
I have 2 1:9, and I just got a 1:7...... still havent got to break it in

03-13-2007, 6:20 PM
when would i want to shoot a heavier bullet?
i just realized that i have nothing but 55gr.

Because there is factory loaded ammo with 69, 75, 77 and 80 gr bullets. Or who knows, you might decide to get into reloading at somepoint.

03-13-2007, 6:20 PM
when would i want to shoot a heavier bullet?
i just realized that i have nothing but 55gr.
When you're shooting at longer ranges and you want less wind drift. :cool:

03-13-2007, 7:02 PM
With a barrel that long why not go with 1-8, the highpower guys like that twist and if you ever step up for a few boxes of blackhills you can shoot it out to 600meters.

Or go with the Varmit setup and take advantage of some of the very light bullets that can be used on live targets at long ranges.

For punching paper the 1-9 will work but so will the 1-8 and that can be used out to 600 so Id have to go 1-8.

03-13-2007, 7:09 PM
I have it on very good unquestionable authority (although sadly not my first-hand experience) that 77gr. SMK out of an M4 hits like a truck and is very accurate out to 600 yards when shooting at targets roughly the size of armed Iraqi rebels.

All jests aside, heavier grain bullets definitely serve their purposes, combat, long-distance "serious" target shooting, and hunting of mid-sized game. Unfortunately those types of ammo are quite expensive; but really aren't necessary for general plinking and range use anyway. As a number of others have said 1:8 or 1:9 is a very good way to go for typical 55gr. ammo, 1:10 or 1:11 like the "old school" M16A1s would also be acceptable but :1:8-9 would be more versatile and stable.

03-13-2007, 7:14 PM
Anyone have experience with 1:7 rate of twist, and what do you think of it? Now that we are all going into rate of twist, might as well ask my question.

03-13-2007, 7:27 PM
My duty rifle was a Colt M4 with a 14.5" 1:7 barrel, I never really checked the barrel itself but I'd imagine it was Colt as well. It also handled M855 *very* well, never saw combat or anything [not a poser disclaimer :rolleyes: ], but in all our range time I was rather happy with it, good hits out at 300yards with irons. I'm sure some of the highpower and other competition shooters could offer up more info and/or ballistic data though. I just know it shot well. :D

03-13-2007, 8:52 PM

03-14-2007, 12:46 AM
I've a 16" Colt 1:7 chrome-lined.... very accurate... i shot everything from 55gr, 62gr.... to 77gr.....