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Twist Rate question

 
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  #1  
Old 09-02-2004, 01:15 PM
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Twist Rate question

Does anyone here know if a 7MM Remington Magun barrel with a 1 in 9.5 inch twist rate will stabilize 175 grain bullets? If not, does anyone here know what the heaviest bullet it will stabilize is?
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Old 09-02-2004, 04:44 PM
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Re: Twist Rate question

Newbie 71,

The 9.5 twist shoudl handle most 175 gr pills at the velocities the 7mm Rem Mag will drive them to.

The flat base 175's will not be a problem at all. The long ones like the 175 gr Sierra SPBT may not be fully stabilized and would need a 9" twist.

Most 9.5's I have seen stabilized all the conventional bullet weights in 7mm.

Good Shooting!!

Kirby Allen(50)
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  #3  
Old 09-02-2004, 05:12 PM
LB LB is offline
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Re: Twist Rate question

Hey, you're not that much of a "newbie" if you are aware enough to ask a question like that. 175 grain is a common big game bullet in 7 Mag. I'd be surprised if most hunting bullets do not stabilize, depending on barrel length and muzzle velocity; unless you are thinking of an exotic bullet shape, or all copper.

What is your mission? LB
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Old 09-03-2004, 06:24 PM
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Re: Twist Rate question

Thanks guys.
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  #5  
Old 09-04-2004, 10:19 PM
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Re: Twist Rate question

I just asked Sierra the same question about their new 175 SMK (would the 175 SMK work in a 9-1/2 twist in a 7mm rem mag)

The engineer's reply was at first no, it wasn't recommended for 9-1/2 twist @ 2900-3000 (roughly 7mm Rem Mag speed), they didn't think it would stabilize adequately. He recommened that I try the 168gr SMK instead.

He then emailed me back a few days later, saying they did have some promising results with this combo, and that he would let me know what they found in a couple of weeks after further testing.
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  #6  
Old 09-05-2004, 06:11 PM
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Re: Twist Rate question

I may be wrong but i think if your barrel is rem stock it may be 9.25 twist check it out just a thought MARLOW
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