Mini-14 Barrel twist rate

[302w 83]

My dad has an older Mini-14 that was produced sometime in the late seventies to mind eighties. I'm trying to figure out what the barrel twist rate is, and I am coming up with vague answers. I do not know if it is marked as a Ranch Rifle, but I do know it was sold in NJ with a folding stock and flash hider.

 

I am hoping it is a 1/10. My AR has a 16A1 barrel on it, so I can't shoot M855. I don't like M855, but I would like to be able to shoot it if I find it somewhere cheap.

[SuRrEaLNJ 294]

I believe it was 1:10 originally then 1:7 in 1986 and finally 1:9 in 1997

 

Perfect union tends to be the keepers of good mini info but also of way more bs and bickering then I've ever seen on any other forum

[T Bill 649]

You may find your answer here.

http://sunflowerammo.blogspot.com/2012/11/ruger-mini-1430-barrel-twist-rates.html

[302w 83]

Thank you guys. Can't believe I missed that. The little bits of M855 will get fed to the Mini.

[Old School 611]

Don't believe anything even what's stamped on the barrel...

 

Measure it, it's super easy...You may be surprised.

[jm1827 284]

Don't believe anything even what's stamped on the barrel...

 

Measure it, it's super easy...You may be surprised.

I always check my guns, and it is very easy.  I use a brass wire cleaning brush and put a small black mark on the and of cleaning rod (the end near the handle) and when I run the brush down the barrel I count the number of rotations.  As long as you know or can measure barrel length you then have the number of inches per rotation (or rotations per inch) , which you can convert to number of rotations per foot.

[Old School 611]

I always check my guns, and it is very easy.  I use a brass wire cleaning brush and put a small black mark on the and of cleaning rod (the end near the handle) and when I run the brush down the barrel I count the number of rotations.  As long as you know or can measure barrel length you then have the number of inches per rotation (or rotations per inch) , which you can convert to number of rotations per foot.

 

Easier way:  Cleaning rod, jag, patch.

Mark the rod with jag and patch.  Push the rod through one revolution mark again.

Measure distance between marks.

One of my 1:9.25" turned out to be 1:8.75".  That .5" allowed me to try heavier bullets.