Home Forums Reloading Varmint Rifles 223 remington twist rates

What is the difference(pro/cons) between the 1:9 and the 1:12 ? What wieght bullet with what twist? Thanks

check 224 here Pros and Cons would depend on what you want to do with it.

http://shilen.com/calibersAndTwists.html

My 1:9 does great with the 40 grain Ballistic Tip, the 75 grain Berger VLD and most things I've tried in between.

A 1:12 isn't going to do that.

12" will getcha a 53X.

9" is very much on the bubble with the various75's,in a SAAMI 223...........

I know, but it's how my LTR came equipped. I tried the Berger on a lark and it worked, haven't tried the AMax.

A build would get 8", or maybe tighter, for needle chucking.

I shoot the 75A-Max with great affection in my Facory barreled LTR,punched 223AI,with the mag modded to kiss at a 2.510" COAL....at 3100fps.

In a SAAMI tube,you'll be working with less velocity,which is less RPM,which will slide you even closer to that bubble..........

My local smith wants to sell me a 7" Hart.

Better than a 9"..............(grin)

BigG, what is your intended use of the rifle? This has a lot to do with what twist you will want.

No it don't.

The 75A-Max can't be whooped...............

Crows,plinking etc.. plan on sticking with 55 to 60 grain projectiles. Just want to be sure there is no big advantage for me either way.

There ain't.

The 75A-Max is where you wanna be. For conversation I've 223AI's in 7,8,9,10,12 and 14" twist.

Go 1-8",thank me later.............

i'm running one of those 1-7" Harts on a .223 AI.

it's a good barrel, but the 1-8" Brux barreled .223 AI is my most accurate rifle

I'd go 1-8" 3-grooved PN at 21".

Hint..............

For what you'll be doing I'd use lighter bullets, 40's/50's/maybe 55's, and the 12 twist.

The 75 will do it all and slip conditions better. Were I in a straight up Crow Goo Flinging Tourney with my FX3,I'd lean 50's and more than 12" for full affect.

The 75A-Max's utility has gotta be experienced,to be appreciated................

Are you saying that a 7" will spin the Amax too fast or am I putting words in your mouth?

You are saying things I never.

1-8" is King however..............

K thx

75's have the trajectory of a 45/70...not condusive to a one shot one kill in 223 velocity...range estimation is critical.

Rifles that are twisted for 75's have longer throats also. Longer throats = shorter barrel life for the lighter bullets. You can only jump bullets so far before accuracy starts fading.

Of course, if you are a steel plate shooter, you have a lot more lee way in the accuracy department.