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300 wsm barrel length question

 
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  #1  
Old 03-01-2011, 10:08 PM
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300 wsm barrel length question

Thinking of rebarreling my 300 wsm. The way i understand it the 300 wsm was designed to work with shorter barrels. Is there a velocity benefit to going with a 26 in. Barrel? Is the benefit worth the 2" extra length? Thanks to all who reply.
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Old 03-02-2011, 04:41 PM
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Re: 300 wsm barrel length question

I'm sure it will depend a little on what powder you use, fast vs slow... a longer barrel will give you more velocity... how much is uncertain.

-Mark
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Old 03-03-2011, 10:48 AM
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Re: 300 wsm barrel length question

Southpawshooter,

"working" with a shorter barrel is a relative term. It's all about expansion ratios, and longer barrels help that work in your favor, all other factors being equal. The longer barrles going to give you higher velocities in virtually any centerfire rifle. The real question is, at what point does the package become unwieldly for you? It's a trade off that you need to decide for yourself, and your particular hunting situations.
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Lapua USA
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Old 03-03-2011, 07:32 PM
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Re: 300 wsm barrel length question

2" of barrel length should give you approx. 75'/sec, all else being equal....Rich
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Old 03-03-2011, 09:37 PM
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Re: 300 wsm barrel length question

A .300 wsm is virtually a clone of .300 Win mag powder capacity & ballistics. I would opt for 26 inches of barrel, but I can see where some would opt for 24. I'm fairly tall & like how a long gun points while some like short guns even if they give up ballistics with that length.

The best place to cut length with a .300 WSM is in the action.

Last edited by Buano; 03-04-2011 at 09:36 AM.
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Old 03-03-2011, 09:45 PM
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Re: 300 wsm barrel length question

Typically i would be hunting from an elevated blind with long but narrow windows. I'm starting to think that the 24'' barrel might be the way to go. Especially since i'm already getting good speed, however if i thought that 2'' more barrel would give 100 to 150 ft/sc more than that would be worth it. However i know there are other factors besides barrel length that can effect velocity. I guess my question should be more like "what would you do".
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Old 03-03-2011, 10:37 PM
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Re: 300 wsm barrel length question

A 300wsm has no where near the capacity of a 300 wby mag, wsm 76grns wby 91grns big difference. But short answer, the 300wsm is like a 6.5x284 its effective in a short barrel short action but its kinda like putting 6 mufflers on your car, it doesn't perform to its potential.
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