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From my experiences with eight 300 Win Mags (22" to 26"), a 308 Norma (21") and a 300 WBY (24"), you can only compare "apples to apples" if the barrels are kept to the same length. Otherwise numbers can easily be "fudged". Then, there are other matters, like freebore, tight chambers and barrels that can make a significant difference from rifle to rifle in either chambering.

Having said all that, I've had 2 rifles, a 300 Win (26") and a 300 WBY (24"), that gave superb results from each in velocity and accuracy. So, I've used that experience, which was considerable, to make an evaluation between the two chamberings for my own purposes. I have NO prejudices for or against either. I very much like them both.

So, here is my objective evaluation (for my purpose):

1) Given excellent barrels with tight chambers, the 24" Weatherby would make 3185 fps from 180s using either IMR 4831 or RL-22. It couldn't quite make the 3200 fps suggested by Hornady's #4. But it was superbly accurate. (But I did chronograph loads for a fellow club member who used the same IMR load in his 26" MK-V and it recorded an even 3250 fps... exactly what Whetherby advertised for their 180gr factory fodder at the time, from a 26").

2) My only 26" 300 Win was just as accurate as the Weatherby (1/2" - 3 shot groups at 100 yds), and slightly better in velocity. Top MV from that rifle was 3215 fps from 180s. (BTW, I believe BOTH should use 26" tubes. A 2" shorter barrel WILL lose 50 to 100 fps in each, and I fail to see how 2" in hunting where these are suitable is gonna make any difference in handling!

3) In my summation: I slightly prefer the Winchester for a few personal reasons, but I've concluded that apart from likes and dislikes over rifle styles, that the actual difference in performance between the two, given the above quality of barrels that are equal in length is about 100 fps in favor of the Weatherby using the same powders and bullets.

And, BTW, the 26" 300 Win gave 3000+/- fps from 200s.

And, for any doubters, consider this: Nosler's #6 shows up to 3160 fps for their 180s and up to 2972 fps from their 200s in a 24" test barrel for the 300 WINCHESTER Magnum! My velocities were from a 26", so if Nosler's manual is realistic, then the 40 to 50 fps increase I received from a barrel 2-inches longer is realistic.

And, my brass in either could easily be reused 10X plus. Never a loose primer in either!

I think (a 300 magnum in) either version could arguably be considered the best all-around rifle/cartridge combo for any big game hunting in North America.

Bob

www.bigbores.ca


"What shall it profit a man if he gain the whole world and lose his own soul" - Jesus

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The 416 Rigby, the 375 H&H, and the 300 Wby. Nothing introduced since each came into being is much of an improvement. Newer stuff may be a little different but for the sportsman/hunter there has not been a big gain. I should have said the 220 Rocket rather than the Swift. It was an oversight on my part.

I have never been too concerned about cost or if I can get ammo at WalMart. If I have to rely on WalMart for ammunition then I should be using a 30/06 or a 308 or a 243.



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Originally Posted by moosemike
Originally Posted by CaptainCrossman
The differences for big game between 300 Win Mag and 300 Wthby Mag, are $1 per shell, compared to $2 per shell. That's about it. And maybe 100-200 fps at best, if loaded with the heaviest bullets, otherwise they are identical.

the reloading specs on some 300 mag family cartidgee are exactly identical, even though the case volume is a lot different. For instance 308 norma mag vs. 300 wthby mag, exactly the same powder charge for 150 grain bullets, for some powders.

we're talking the same girl in a different dress

It's really a question that borders on nonsensical, because you can fire 300 Win Mag ammo, in a 300 Weatherby. If you buy a 300 Weatherby, you basically get a 300 Win Mag and 300 H&H included, free of charge- because it will fire all 3 cartridges just fine.

no different than shooting 38 special out of a 357 magnum handgun, with the shell headspacing on the rim. In the 300 belted mag family, the shell headspaces on the belt, the case just fireforms to the chamber. If the caliber is the same, and the case is long enough to put the bullet tip into the throat lead of the barrel, it will fire out of the gun.

if one already owns a 300 Wthby Mag, it makes absolutely no sense to buy a 300 H&H or 300 Win Mag, or even a 308 Norma mag. If you want to try out a 300 H&H or 300 Win Mag, you can just buy a box of shells and shoot them through your 300 Weatherby. They are all basically the same in terms of performance. If one wants to try first time the 300 mag family and doesn't want the wallop, blast, recoil of the 300 RUM or 30-378, the 300 Weatherby is the only choice, and best choice, for this reason.

I would not magna port any rifle barrel, the blast effect on your muzzle-side ear would be dramatic, and your ear would ring for 3 days from firing one shot, or worse. It would require earmuffs just to hunt with. The dirty little secret about porting any barrel is, recoil is reduced, but muzzle blast is greatly INCREASED. But again, it gives the firearms companies one more thing to sell you.





You're actually recommending the practice of firing a .300 win mag in a .300 Weatherby?




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Originally Posted by Dirtfarmer
Originally Posted by BWalker
I have a 6mm Remington too. Its inferior to the .243 only in that it barely fits in a 700 short action.


Well, if it fits... smile

Does that mean you have problem with longer bullets, etc.? I've never played with a magazine fed 6mm Rem.

Mine is a 40XB single shot. Of course, no problems there... laugh

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Yes it does and your stuck with one seating depth with as well.

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Hmmm...

What about an aftermarket box with a bit more length?

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Thats a option, but then you have to mill the action, and they record of longer moag boxes feeding correctly is pretty spotty.

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I guess if I was going to build one, I'd use a LA.

My 6.5-284 is on a pre-64 M-70 donor that was a .243. I knocked out the mag block, used '06 ejector and bolt stop. Wouldn't need to do any of that with a M-700, LA.

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Originally Posted by RinB
The 416 Rigby, the 375 H&H, and the 300 Wby. Nothing introduced since each came into being is much of an improvement. Newer stuff may be a little different but for the sportsman/hunter there has not been a big gain. I should have said the 220 Rocket rather than the Swift. It was an oversight on my part.

I have never been too concerned about cost or if I can get ammo at WalMart. If I have to rely on WalMart for ammunition then I should be using a 30/06 or a 308 or a 243.


And oddly enough I hunted Africa with all three smile and for when I'm feeling "plebean" I do also have an 06 and a pocket T-shirt to fit in at Wal-Mart smile


A good principle to guide me through life: “This is all I have come to expect, standard lackluster performance. Trust nothing, believe no one and realize it will only get worse…”
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Now my day is wrecked, someone had to mention Wal=Mart.....later

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I'm off to Wal-Mart myself too! smile


A good principle to guide me through life: “This is all I have come to expect, standard lackluster performance. Trust nothing, believe no one and realize it will only get worse…”
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Stick with the 300 Win Mag. The small increase in velocity is not worth the increased recoil, limited avaiablity of ammo, and dealing with the increased muzzle blast.


Rick

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Originally Posted by DeerSkinner
Stick with the 300 Win Mag. The small increase in velocity is not worth the increased recoil, limited avaiablity of ammo, and dealing with the increased muzzle blast.


+1

I've hunted with them both, currently have an Ed Brown Damara in .300 Win Mag and am not in the market for a Wby.

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I can't believe this thread keeps going on and on and on....

According to one rule-of-thumb about internal ballistics (proven both theoretically and empirically) here's about a 2% difference in potential muzzle velocity between the .300 Winchester and Weatherby. That's about 65 fps with typical 180-grain handloads. Wow!


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Yea, but Johnny! It's the name; it's faster (as you mentioned) by a twit. Trump card! grin, A marketing managers dream.

And so it goes.
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Yep!

Which is exactly why the .30/.378 now outsells the "old fashioned" .300 Weatherby, according to one of my sources at Weatherby.


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That's why the 300 Bee kicks butt on the Winnie the Pooh mag @ 301 yds... wink

Dober


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I have had 3 different 300magnums, a 30-338, a 300 WM and a now a 300 bee. My favorite was the 30-338. From a reloading standpoint I like the Bee more than the WMag.

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Originally Posted by Mule Deer
I can't believe this thread keeps going on and on and on....





Well, at least some of us aren't on the "Ray Atkinson" thread!! crazy


How 'bout a little credit? ? whistle


jwall- *** 3100 guy***

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Originally Posted by Mule Deer
I can't believe this thread keeps going on and on and on....

According to one rule-of-thumb about internal ballistics (proven both theoretically and empirically) here's about a 2% difference in potential muzzle velocity between the .300 Winchester and Weatherby. That's about 65 fps with typical 180-grain handloads. Wow!

Pretty paltry increase in velocity for having to deal with a Weatherby...

Last edited by BWalker; 10/01/12.
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Originally Posted by jwall
Originally Posted by Mule Deer
I can't believe this thread keeps going on and on and on....





Well, at least some of us aren't on the "Ray Atkinson" thread!! crazy


How 'bout a little credit? ? whistle


laugh laugh

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