  | Optimum .300 wm Barrel Length |
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06-01-2011, 06:35 AM
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Optimum .300 wm Barrel Length
I searched this site and googled it but couldn't find an answer. If I was building a .300 wm what barrel length would give me the best performance. Weight is not a concern, and it would be shooting 200+ gr. bullets.
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06-01-2011, 01:37 PM
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Re: Optimum .300 wm Barrel Length
Quote:
Originally Posted by 3fingervic
I searched this site and googled it but couldn't find an answer. If I was building a .300 wm what barrel length would give me the best performance. Weight is not a concern, and it would be shooting 200+ gr. bullets.
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I was told by a Sniper trainer with decades of experience that a 26" barrel in a 1:10 twist is the optimal length needed for the the 300 Win Mag. If I were to build one, that is exactly what I would get. Get a taper of 1.200 to .875 with deep flutes.
Tank
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06-01-2011, 02:40 PM
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Re: Optimum .300 wm Barrel Length
I have a .300 wm and the barrel still has a lot of life left. I was just thinking about a rebarrel in the future. I am finally getting the 208's loaded, and out of my 24" barrel it looks like I'm going to be around 2750 fps. I was thinking by adding inches to the barrel I could be closer to 3000fps? It's trivial I know, but just wondering
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06-01-2011, 02:41 PM
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Re: Optimum .300 wm Barrel Length
by 'best performance' I assume you mean the barrel length that would produce the highest velocity. If that is true, I would think 28 or 30 inch would do the trick (leaning more towards 30).
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06-01-2011, 03:36 PM
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Re: Optimum .300 wm Barrel Length
Your going to get more velocity with a longer barrel, but not necessarily what you are looking for. I've been struggling with this theory for the past couple years. Right now I have to bump my velocity up to 2950 for match my ballistics for my .308 that is chronoing at 2774 average. I'm thinking my chrony is a little off. I have to dial 14.25MOA for 645yds. Found that out today. That is why I missed a couple groundhogs several times today trying to hone in my dope. Finally put up the steel and got some hard data. So it is a matter of just trying to figure it all out.
Tank
__________________
Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.
If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger
Friends don't let friends develop canonitis! - chucknbach
arguing over the internet is like the special Olympics....even if you win, you are still...special!
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06-01-2011, 03:58 PM
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Join Date: Mar 2009
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Re: Optimum .300 wm Barrel Length
Tank,
What velocity were you getting out of the WSM. You were shooting 208's, right. I'm not looking to sacrifice accuracy just to get 3000fps., and I wasn't looking to shoot a 40" barrel. I was just kind of trying to find out how long you would go and it still make sense.
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06-01-2011, 07:20 PM
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Re: Optimum .300 wm Barrel Length
I was getting around 2850fps. There are guys able to push it to 2950, but for me that was killing my brass in 2 firings. 2750 to 2800 seemed to be a good speed for my 26" barrel. If you want 3000fps you might want to look at a 30+" barrel. Using H1000 or IMR7828 should result in the 3K you want.
Tank
__________________
Matthew 7:13-14
"Enter through the narrow gate. For wide is the gate and broad is the road that leads to destruction, and many enter through it. [14] But small is the gate and narrow the road that leads to life, and only a few find it.
If you find your self in a fair fight, your tactics suck!- Marine 1st Sergeant Jim Ryfinger
Friends don't let friends develop canonitis! - chucknbach
arguing over the internet is like the special Olympics....even if you win, you are still...special!
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