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Old 04-12-2011, 11:19 AM   #1
Whatchaketchemon
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Default 24" barrel in 300 Weatherby

Does a 24" barrel in a 300 weatherby provide enough more performance to justify the cost of ammo versus a 26" barrel in 300 Win Mag? I plan on buying one of the two and the new winchesters seem to come with 26" barrels while the older remingtons that I was interested in come with a 24" barrel. This rifle will be used primarily for medium range hunting up to elk size critters and paper punching. I would like to get it dialed in for shots to 500-600 yards. Thanks.

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Old 04-12-2011, 11:30 AM   #2
baltz526
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Default Re: 24" barrel in 300 Weatherby

No, if your buying factory ammo.
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Old 04-12-2011, 07:46 PM   #3
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Default Re: 24" barrel in 300 Weatherby

Quote:
Originally Posted by Whatchaketchemon View Post
Does a 24" barrel in a 300 weatherby provide enough more performance to justify the cost of ammo versus a 26" barrel in 300 Win Mag? I plan on buying one of the two and the new winchesters seem to come with 26" barrels while the older remingtons that I was interested in come with a 24" barrel. This rifle will be used primarily for medium range hunting up to elk size critters and paper punching. I would like to get it dialed in for shots to 500-600 yards. Thanks.
With good handloads there isn't 2cents worth of difference for elk or just about anything else between these 2 calibers. Focus on the rifle and go with the brand and features you like best. Brass is cheaper and easier to find for the Winney.
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Old 04-12-2011, 08:00 PM   #4
Brian_w_l
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Default Re: 24" barrel in 300 Weatherby

go with the 300win.. its plenty for elk @ 600, and won't cost as much.
I don't understand...why pay some much for weatherby brass?
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Old 04-12-2011, 08:10 PM   #5
Dan360
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Default Re: 24" barrel in 300 Weatherby

I don't think I'd own a Weatherby caliber unless it was in a Weatherby rifle. Well, maybe I'd have a 257 Weatherby in a non-Weatherby.

Other than that, I like the 300 Weatherby because of the longer neck. But, you have to have an action long enough and that leaves out standard long-action Winchesters.

I don't think you'd be hurting with 24" barrel on a 300 WBY and I still think you could beat a 300 Winny with it, even if the 300 Winny had a 26 inch barrel. If you want it, go for it. You probably don't really need it.
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Old 04-13-2011, 01:20 AM   #6
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Default Re: 24" barrel in 300 Weatherby

Figure you'll lose about 75 to maybe over 100 FPS dropping those 2", so you'll still be faster than a .300 Win mag but you will be gaining a pretty good dose of muzzle blast. I once re-chambered a 18 1/2" .308 to the Weatherby & was able to get 180 gr @ 3010 fps but had to lean on it pretty hard & there was no way you wanted to shoot it without both plugs & a good set of muffs. BTW afterwards we cut it to the .30-378 & only gained another 150 FPS far short of what you get in a 26" tube.
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Old 04-13-2011, 08:44 PM   #7
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Default Re: 24" barrel in 300 Weatherby

300 Wby factory velocities are a bit overstated. With 180 grainers, the Nosler manual shows a peak "accurate" velocities of 3118 and 3130 fps for a 24" barreled Winny; and 3185 fps for a 26" barreled Wby. Correct for barrel lengths and that is a wash. The Barnes manual gives the Wby a little more than a 100 fps advantage with the most accurate loads (3000 vs 3100), and the Hornday manual gives the Wby a lot of loads with a 100 fps advantage and one with a 200 fps advantage, though no indication is given as to which might be the most accurate.

After having shot a 300 Winny extensively, I am confident a 26" barreled 300 Winny can get 3100 fps with a 180 grainer. A 24" barreled rifle would probably get 3000-3050 fps.

Most the guys I know who shoot the 300 Wby report 3100-3200 fps from a 26" barrel. I would surmise a 24" barreled 300 Wby would shoot 3050 - 3100 fps, so I think a 26" barreled Winny would shoot about the same velocity as a 24" barreled 300 Wby.

Of course, each rifle is a law unto itself and there are always exceptions. I was able to run a 26" barreled 300 Winny at 3200 fps with 180 grainers, and even though there were no visible pressure signs that certainly would have to been a hot load, so I backed off. I wouldn't expect that velocity to be a sign of a hot load in a 300 Wby.

It really comes down to psuedo-physics. A general rule is you get 25% of the case capacity increase in velocity. The 300 Wby holds 10% more powder than a 300 Winny, so there should be a 2.5% increase in velocity. At 3000 fps that works out to a 75 fps advantage to the Wby, which makes sense.

Like Baltz said, there is no practical field difference between the two, and the 300 Winny is less expensive in terms of components. The 300 Winny seems to have an accuracy edge. 300 Wins are still sometimes used even in 1K BR, but hardly anyone (if at all) runs a standard chambered 300 Wby.

Now even though the 300 Winny might have an accuracy edge in competition, there again would be no practical field difference between the two. Like was mentioned earlier, I would pick the rifle I liked best and not worry whether it was a 300 Winny or a 300 Wby.
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Old 04-14-2011, 05:36 AM   #8
basic instinct
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Default Re: 24" barrel in 300 Weatherby

I have done some chrono shooting and read some articles on speed VS barrel length, IN a lot of cases in the article I read recently. the shorter barrel was as fast or within a few FPS of the longer barrel, Has a lot more to do with quality of barrel, than length, according to the writer. It was in a Handloader magazine. The average loss FPS in 1" of barrel was less than 20 FPS when he did loose velocity. In some cases the shorter barrel was faster. I Have a 24" 223 that chronos faster than my other 26" barrel 223 that I sold now.
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Old 04-14-2011, 05:50 AM   #9
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Default Re: 24" barrel in 300 Weatherby

Ballistics aside, I would say go for the one you want and have your heart set on.

I had an old man tell me that a long time ago. He owned alot of rifles and I was asking him about a few different calibers for a rifle that I wanted to build. I love the weatherby 257 and have since I was very young, but I thought about all the other options out there and was leaning towards a few others due to the cost of brass being a little lower and the ballistics very close to the 257 wby. What he told me in the end made me stick with the 257 wby. You can always sell the one you don't like and go with another but if you don't go the way you are leaning you will always wonder. I wouldn't let a small price difference or a small ballistics difference keep you from going with the one that you really want to shoot. If it was really about cost you wouldn't buy one or shoot at all. It really isn't a cost effective sport.
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