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2 grove dimensions vs 5 grove dimenesions!

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Black Prince
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2 grove dimensions vs 5 grove dimenesions!

#1 Post by Black Prince » Mon Sep 09, 2019 7:20 am

Hi I am wondering :think: about this dilemma.
I guess that the 2 grove would be a looser or not as tight a twist as the 5 grove barrel.
Could or would some one know the twist rate for both, or point me in the right direction.


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ps 49ers got up if any one is interested.
I know what I like and like what I know.

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Tommy Atkins
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Re: 2 grove dimensions vs 5 grove dimenesions!

#2 Post by Tommy Atkins » Mon Sep 09, 2019 10:37 am

I'm not sure I follow the logic?
AFAIK all the variations land/Grove patterns have the same twist rate as they're stabilizing the same Mk VII projectile. 1 in 10" and with a left hand twist.
Its a simple test if you have the rifles. Put a tightly patched oiled jag on a rod, push it in the MUZZLE for about 18". & note its rotational position with a Sharpie "dot". Withdraw till it makes 1 full revolution & measure the distance its moved.

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Re: 2 grove dimensions vs 5 grove dimenesions!

#3 Post by ammolab » Mon Sep 09, 2019 11:19 am

Twist is the same 2 or 5 groove barrel.

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Re: 2 grove dimensions vs 5 grove dimenesions!

#4 Post by Rapidrob » Mon Sep 09, 2019 5:12 pm

The lands are wider,that's all.
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Black Prince
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Re: 2 grove dimensions vs 5 grove dimenesions!

#5 Post by Black Prince » Mon Sep 16, 2019 12:22 am

Hi there back again been away.
Yep will Try the Tommy Atkins method.
Thanks
I know what I like and like what I know.

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