Need some help with Twist Rate!!!!
 

Im getting a Savage 10FP .223 Tactical and the twist rate is 1:9 twist. For a .223 is this amount of twist too much. What is the affects of this kind of twist. Thanks in advanced for all the help!!!:D

RE: Need some help with Twist Rate!!!!
 

The 1:9 twist is perhaps the most versatile of all the .223 twists. It can shoot bullets up to the 75 gr. Hornady A-Max; and still group pretty well with bullets in the 50 and 55 gr. weight range. Obviously if you were going to shoot only 55 gr. and lighter bullets, you would choose a 12" or even 14" twist. But I have been amazed at how well 9" guns will often shoot bullets like the 50 gr. V-Max.

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RE: Need some help with Twist Rate!!!!
 

My 1:9" on my AR15 grouped all ammo from 40-60gr very well. It really shined with Sierra 52gr HPs. My 1:12" on my bolt 223 shot everything equally as well. My 1:9 on my Ruger Mini14 is just a spray an pray type weapon.

The savage will shoot great with that barrel, hope this helps your decision!

RE: Need some help with Twist Rate!!!!
 

In answer to your original question . . . . the affect of having more twist than you need is usually a slightly less favorable pressure/velocity ratio. A 14" twist .22-250 might be able to get 3750 fps out of a 55 gr. bullet before it shows any pressure signs, and a 10" twist might start showing pressure signs at 3700 fps. And, at least in theory, the closer the twist is to optimum, the better the accuracy will be. In practice, this seems to be whatever the individual barrel likes.

The only cardinal rule about twist rates is that if you don't have enough, you are absolutely screwed - no exceptions.

RE: Need some help with Twist Rate!!!!
 

you cannot over stabilize a bullet

RE: Need some help with Twist Rate!!!!
 

1. The effect of a 1/9" twist in the ,223 is to enable you to effectively use the heavier .224" bullets now available. The original twist rate in the .223 was too slow for any bullet longer than the dervice ammo's 55-grain FMJBT. Believe me, I had one of the first .223's and could not get it to accurately shootbullets suitable for larger animals than woodchucks!

2. The reason for this problem is NOT the 1/9" twist, it is caused by the fact that the rifleis a Mini-14, which is noted for being "like lightning". It seldom strikes twice in the same spot.....

RE: Need some help with Twist Rate!!!!
 

It sounds like everyone has their own opinions.... Im going to but hunting coyotes, groundhogs, prairie dogs and things of that sort. Would a 1:9 twist be a good one for all of this kind of shooting? thanks

RE: Need some help with Twist Rate!!!!
 

Ha Roskoe, I am going to order a RR arms Varminter. I want it to shoot 52 grain bullets out to 300 yards. What twist, and possibly what barrel length do you recomend. I posted this here because I thought the author might also be interesed in your thoughts. Tom.

RE: Need some help with Twist Rate!!!!
 

Unless you need/want to shoot bullets heavier than 60 grains or so, the 1:12 twist is probably ideal for just about all bullets in the 50 to 55 grain range. These are overwhelmingly the best varmint bullets, so for a varmint rifle that is what I would pick. For the regular 52 gr. Sierra HPBT only, a 1:14 should be adequate but somewhat limiting. The 9" twist allows you to do shoot varmints as well as do some long range match shooting.

Barrel length: at least 20" but not over 24" - 22" would be about ideal in my book.

RE: Need some help with Twist Rate!!!!
 

Yeah the twist in the Mini-14 is the last thing you'd be blaming for poor accuracy....

RE: Need some help with Twist Rate!!!!
 

The RR will be used for groundhog hunting out to 300 yards. I use a heavier caliber past that distance. It will also be a fixed position rifle. I will also use it for off hand fun shooting. I am not a competitor. I also think that the 52 grain bullet would be optimal. I was thinking about the 20 inch barrel. Thanks for your help. Tom.

RE: Need some help with Twist Rate!!!!
 

i started with 60 gr V-MAX for my AR which has a 1/9 twist. then one day i bought a box of black hills (blue box) 50 gr V-MAX and they shot just as good on paper out to 100 yrds. those V-MAX bullets are nice.

RE: Need some help with Twist Rate!!!!
 

Jake
The only down side to faster twist rates is it seems to magnify bullet and load imperfections, so you'll need to work a little longerfinding a good factory loading or working on a reload.I would opt for the 12FV though in 22-250, it's closer to optimum with a 1 in 12 twist. If your fixed on the 223 round take a look at the newRemington 700 SPS Varmint which does have a 1 in 12 twist and should be less finicky, price should be close.

Head
The RRA Varminter only comes in 1 in 8, I had this very gun with the 16 inch barreland it shot .5 groupswith Lake City55 GrainFMJ, so I think the lighter bullets are not a problem in the long run,but faster twist rate does magnify bullet imperfection's though, so use a quality ammo like Black Hills or reload with quality bulletsand powders withlow deviations.

RE: Need some help with Twist Rate!!!!
 

Yes,you can easily overstabilize a bullet with too fast rate of twist.

RE: Need some help with Twist Rate!!!!
 

So, tell me; what bad things happen when you "overstabilize" a bullet?