[Dogman1]

I shoot Black Hills 52 grain match thru my Remington's when I shoot Prarie Dogs. One Remington has 1-12 and this rifle is accurate with the 52 grainers. My other is a 1-9 and this also is accurate. I'm sending one of my Ranch Rifles off to Accuracy systems in colorado to get the .900 barrel put on. This Mini will be used for Prarie dogging I was looking at a 20' but if I go with a 16' or18' and shoot the 52.grainers would it be wise to get the 1-8 twist due to the short barrel length? Thanks.

 

[tmc2318]

I've sent my Mini to Accuracy Systems also for the .900" full length barrel and Carl recommended a 1-10x twist for 45-55 grain. I'll post a pic and how it shoots when I get it.

 

[cajungeo]

Hey dogman, I would go by what carl says, but my own opinion a 10" turn is what I would get for light to med wt. bullets. If you are going to primarly use the mini for long range varmint, I would lean toward the 20" barrel.

 

[voruzon]

Dogman,

Extreme twist not only increases the wear on the barrel but may overstabilize certain bullets and even spin lighter-constructed ones apart.
It seems the less extreme twist you can get away with for your ammo, the better.

voruson

 

[jp58c]

Hey size in this case weight does matter
1/9 is a good all round twist for upto 62gr
1/12 military found to be best for 55gr
1/8 match shooting of 69-80

all 16a1 have 1/12 we were supplied with 55gr
when we got the 16a2 the new NATO rnd was a 62gr
thus the 1/7 and over stabilization stories
ask a match shooter about over stabilzing
ITS A MYTH

SEMPER FI keep'em in the black


:usa:




:rapid: :2guns: :ar15:

 

[bushwack]

I don't know if it's possible to overstabilize a bullet, so it may be the wrong term. You can spin a bullet so fast that it'll come apart in flight. Check any bullet makers reloading data on a particular bullet, it'll tell you the minimun & maximum speed (fps) that bullet is good for. On some low drag bullets they do not stabilize until well past 100 yards. Use of these bullets at close range would give you a "Keyhole" effect at the target. This is obvious when instead of a round hole you actually have a hole that looks like a side profile of the bullet. Also bullets don't tend to fly with their tip pointed at the target like a homing missle. A bullet will hit the target at the same angle it left the barrel at.

Just my 2¢
Bushwack

 

[jp58c]

ya got it
its called yaw no really,its the same at 1000m when a bullet goes subsonic and loses its "power"
just a side note they now claim that a odd# grove barrel
will stabilize an ofcenter/unround bullet better and has no adverse effect on a concentric bullet
i've heard a lot from devout rem shooters who got hold of early
production 700s that had a 5 grve pss models i believe

remember a vet today




:rapid: :usa: :2guns: :ar15:



THIS WE DEFEND SEMPER FI

 

[cajungeo]

This Mini will be used for Prarie dogging I was looking at a 20' but if I go with a 16' or18' and shoot the 52.grainers

Im shure you meant 20", not 20'! for your stated purpose I would go with the 20" for longer range, the 10" turn I've read is good up to 60 gr bullets, while the 9" turn will take it up to 70gr bullets, but will still shoot the 52gr accurately.

The heavy bullet will hold its velocity, and energy longer. I have not heard of a bullet in the .223 cal being over stableized. I have seen a .22 hornet disentigrate in pieces.

My opinion would be go with th 20" length, and 9" twist and shoot heaver bullets. I would ask carl at A.S. though as he is the expert!

Here is a calculator. http://www.z-hat.com/twistrate.htm I think it is a little light though. Also here is an article from Lija. http://www.riflebarrels.com/articles/bulle...lance_twist.htm