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  1. #1
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    M1 barrel twist

    Hi, can anybody tell me the twist rate in the M1icon ?
    thanks,
    Bob
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    Right hand 1-10.

    Cary

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    Thread Starter
    Thanks, Cary. The reason I ask is that I won my choice of 300 Berger bullets, but all of their .30 cal, target and hunting, in the 150-168 range recommend 13-15 twist??
    Bob

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    John Kepler
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    Quote Originally Posted by Bob Shunkwiler View Post
    Thanks, Cary. The reason I ask is that I won my choice of 300 Berger bullets, but all of their .30 cal, target and hunting, in the 150-168 range recommend 13-15 twist??
    Bob
    NO WAY! THOUSANDS of people have competed quite successfully with 168's in 1-10 TR barrels out to 600 yds. If you are attempting to shoot 1000 yds with a 155 gr Berger, then a 1-13 is a damn good idea (you have to kick it out of the rifle at 2900+ fps, and to do that you also need a 29-30" barrel....you ain't doin' it with a gas-gun!), but something tells me that you aren't looking to do that in a Garandicon!

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    From 1896, till the M14icon was introduced, US Service rifles had 1:10 twist barrels.

    Most of the bullets shot in the 03 and M1 were 150 grain bullets.

    So, why now, is a 1:10 twist not considered adequate for 150 gr bullets?

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    cuz someone wants to sell us a new barrel,so they can sell us their bullets, so we have to work up new loads, so we'll buy more powder and primers.

    Everyone needs our money.

    Cary

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    AFAIK, 1::10 has been the twist in all U.S. millitary .30 rifles since the Kragicon was first produced (Model 1892, but not made until 1894).

    There may well be better twist rates for some bullets, but with the military there is sort of a circle. They adopt a bullet, then adopt a rifle with a twist that will best use that bullet, and from then on only adopt bullets that will work well with that twist rate. Adopting some other bullet (shape, weight) would require a change in twist and with millions of rifles in the hands of troops, that idea isn't going to fly.

    Jim
    Last edited by Jim K; 04-12-2009 at 09:40 PM.

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