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22" or 24" Barrel .300 Win Mag

 
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  #1  
Old 01-28-2011, 10:07 AM
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Join Date: Dec 2010
Location: Nevada
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22" or 24" Barrel .300 Win Mag

Newbie question-

I am having a rifle built and am torn between getting a 22" or 24" barrel, the action will be .300 Win Mag. I am leaning towards the 22, as I will be using this gun for backpack hunting and would like the shorter length.

My question is this: How will the shorter barrel affect the ballistics? I notice that most calculations from the ammo manufacturers and on the Zeiss ballistic calculator site are based on a 24.

An important side note- I won't be using this rifle for shooting over 600 yards (unless I get a hell of a lot of practice in.....). I also will only be using factory ammo, as I do not reload.

Thank you for any guidance or ideas. This site has been a tremedous help.
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  #2  
Old 01-28-2011, 11:49 AM
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Re: 22" or 24" Barrel .300 Win Mag

I was told by very seasoned shooter in both .308 and 300WM (should be a hint as to what he did) said 26" is by far the best length for 300WM. But if you want a short barrel, I wouldn't go any shorter than 24" w/o changing caliber to a 300WSM.

Tank
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  #3  
Old 01-28-2011, 11:55 AM
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Re: 22" or 24" Barrel .300 Win Mag

Hello Fellow Nevadian! The generality you hear are numbers like 25 - 50 feet per second per inch of barrel length from 20 - 28 inches. All rifle loads on FPS are also genralities that would require actual chronograph time with you particular combo.

I've humped some Nevada mountains with big barrels with over 20 pound rifles. you can go with a smaller contour barrel and the difference in weight between a 22 and 26 inch is negligable. or even 28 with a brake.

Personally i don't shoot super ranges or at moving animals because the possibility of wounding and loosing them goes up exponentially.

but I believe that longer barrels are easier to hold steady and the added FPS and less muzzle blast is a plus. You only need a short barrel for thick brush and dangerous game! LOL
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.270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.
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  #4  
Old 01-28-2011, 01:01 PM
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Re: 22" or 24" Barrel .300 Win Mag

I would recommend the 24" barrel so as to get the most from your 300wm. If your using the same contour for a 24 or 22in, that 2 inches is not but a few ounces at most in weight.
I have 2 300wm one with 24"barrel, the other 25". Wouldn't think that 1 inch difference in length would have much effect on velocity but it does, chronograph shows that fact.
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  #5  
Old 01-28-2011, 02:54 PM
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Join Date: Dec 2010
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Re: 22" or 24" Barrel .300 Win Mag

Thank you guys for the advice. I am going to go with the 24" barrel. Another thing that a buddy told me was "If 24 is unbearable, you can always have it cut down to 22. You can't add material if you find that the 22 is too short."
Thanks again and have a great day,
fatpete
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  #6  
Old 01-28-2011, 04:55 PM
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Join Date: Jan 2011
Location: Woodbury, MN
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Re: 22" or 24" Barrel .300 Win Mag

also - what twist rate are you going to go with? The more twist with the shorter barrel - you'll be able to stabilize the bullet better. Like 1:10 would be good for your 24" - you'll just loose a little velocity than say a 26" barrel with the same twist.
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  #7  
Old 01-28-2011, 05:42 PM
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Re: 22" or 24" Barrel .300 Win Mag

Quote:
Originally Posted by fatpete View Post
Thank you guys for the advice. I am going to go with the 24" barrel. Another thing that a buddy told me was "If 24 is unbearable, you can always have it cut down to 22. You can't add material if you find that the 22 is too short."
Thanks again and have a great day,
fatpete
Hey do you ever shoot out at the Washoe range? You could apply the same logic to a 26 inch if you don't like it make it 24. LOL
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.270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.
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