Rifling and Twist

Rifling and Twist

What is twist rate? First let's talk about rifling. Rifling consists of grooves cut or formed in a spiral nature, lengthwise down the barrel of a firearm. Rifling is placed in the barrels of firearms to impart a spin on the bullets. Twist is the amount of turns the rifling has to spin the bullet. Expressed in terms of the number of revolutions per inch of barrel length, this ratio is commonly expressed by designations such as 1:10, 1/10 or 1 in 10 twist, the 1 represents 1 twist, the 10 represents inches of barrel length.

What does the twist rate do:
The rate of twist determines the optimum bullet weight for a given caliber and speed of the bullet by applying the proper spin on the bullet to prevent the bullet form yawing and pitching.

How do you know what's right
A good rule of thumb is that the heavier and longer a bullet is, the faster the twist rate needs to be. A lighter shorter bullet needs a slower twist rate to give proper bullet spin.

Exception to the rule:
Over stabilization of bullets can occur when larger heavier bullets are fired at very high velocities.

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9 Comments

4 years 34 weeks ago, 6:35 PM

CharlesW

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If not you should give your source.

Have you ever read anything about
Elmer Keith ? If not you might find it
interesting reading.

A little rebellion is good medicine for the government Thomas Jefferson
4 years 34 weeks ago, 6:53 PM

Anonymous

http://gunshowroom.com/Gun%20Trivia.htm

4 years 34 weeks ago, 8:59 PM

CharlesW

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But now you haven't broken any
copyrights unless they say not
to be republished without permission.
Just playing with you but sometimes you
have to watch that stuff.

A little rebellion is good medicine for the government Thomas Jefferson
4 years 34 weeks ago, 10:20 PM

greg az

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Guessing you guys all feel the same way huh... what a great group of guys we grew up reading..

a man has to hold his word, hold his beliefs, and hold a good sight picture.
4 years 34 weeks ago, 12:54 PM

CharlesW

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x

x

A little rebellion is good medicine for the government Thomas Jefferson
4 years 34 weeks ago, 10:25 PM

greg az

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Greasy..

Man..brother.. I was looking for a reason to change my double post, and opened your comment.. thinking this is one GOOD reason..

Wow.. first off they will be quick.. i would make sure and greet them with a smile, and have the wife or kids there to tell them about the Coyote..

Sorry brother ...this really sucks .. have you had trouble with this guy before.. Man i hate this... know we all do..

a man has to hold his word, hold his beliefs, and hold a good sight picture.
4 years 34 weeks ago, 10:31 PM

Anonymous

greg

aint had any trouble other than about a yr ago i told them to keep their dogs home cause they were eating our garbage.I actually told them in concern for the dogs cause baby diapers cant be good for a dogs' gut.We have weekly garbage service but them dogs were raiding our cans almost nightly,knocking them over and making a mess.(Beagle and Great Dane)I didnt tell them that their dogs were growling at us in our own yard when we caught them.I'm the dumbass for bein' the nice guy...

4 years 34 weeks ago, 11:00 PM

greg az

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That whole g-kid thing.. CW.. dont know brother.. know i miss skeeter skelton, and elmer keith..

Greasy i don't want to make your stress levil higher..but im sending up a little prayer on this one.. We all know that if they think this numbutt would get hold of the media.. (im not being protected, or some stupid ...) then it could get nasty.. Hope, and pray it doesn't.. Hate this as greasys got enough on his plate, and could be any of us.. Hoping that the officer is one of the regulars at greasys range..

Night guys.. ohio shooter.. the one in her right hand is sure not a 1911

a man has to hold his word, hold his beliefs, and hold a good sight picture.
4 years 34 weeks ago, 11:36 PM

ecaman

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Older gun writers

I miss Elmer Keith and Skeeter Skelton too, and lots of others. Jeff Cooper, Bob Milek, Robert T. Shimek, Pete Dickey and on and on.
Many of the current writers are excellent, but I really miss those I just named.

If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man. (Mark Twain).
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4 years 34 weeks ago
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