.300 Win Mag. vs. .300 Wby

[lgm270]

The .300 win mag is about 150 fps behind the .300 wby, depending on barrel length, etc.

But,  the .300 win mag is reputed to be more inherently accurate than the Wby.  This has been my personal experience and that of others as well. 

Any comments? 

Any comments re relative killing power of these two different calibers?

[nomosendero]

Yes 150 FPS diff, many times closer to 100fps diff. with handloads to equal pressure.

The killing power diff. is a non-issue, kinda like comparing a an 19-20" 308 & a 26" 308, the killing power is not in a different catagory, but could only say that one has the same energy at a slightly different range.

As far as accuracy is concerned, if either round is used for a custom build, either can be more accurate than the shooter, both are extremely accurate. Yes, you hear of far more accurate 300 Wim Mags, but there are far more 300Win Mags too. If you ask Sisk rifles or Jarrett which is the more accurate, you will be told the 300 Win mag, they have no reason to lie that I am aware of & is noteworthy.

I have had both & like both, but I sold the Wea. & kept the 300 Win, no regrets. It is also noteworthy that the Military are converting many M24's to 300Win Mag & is highly regarded as precision rifles. Long range shooters who have rifles built for them will pick the 300 Win easily 10 to 1 over the Wea.

Also, it is much easier to buy quality brass for the Win.

[roper]

The .300 win mag is about 150 fps behind the .300 wby, depending on barrel length, etc.

But,  the .300 win mag is reputed to be more inherently accurate than the Wby.  This has been my personal experience and that of others as well. 

Any comments? 

Any comments re relative killing power of these two different calibers?

I've owed customs in both calibers both were equally accurate.  I like the Wby case better it offers more case capacity with the heavier bullets and more choices on how to build a custom on the wby case. 

Granted the 300mag is more accepted by most hunters and I think part of that is the cost to reload the Wby. 

As to killing power etc.  I like the velocity/accuracy from the 300Wb plus I like the idea I can fire a 300 H&H case in my 300 Wby.
As to any real world difference there is the velocity and the 300Wby SAAMI pressure is 65K vs 64K for the 300mag and that may not matter to some but what important is that I know the difference how ever small it may be.

Reason why I still have my 300Wby and sold the 300mag.

[nomosendero]

Both are great. The small vel. diff. is not a game changer in distances that I would shoot with a 30 cal. or game it is used for. I guess if I wanted a vel. increase I would get a RUM & get a real gain, but again I don't know what it will do for me as distance shooting would offer the only real advantage for the RUM & if I want to shoot at a 1500yd. range I will move up to the 338lapua.

I liked my Wea. fine, but it is rather a mute point for exactly the same application anyway.

[Coyote Hunter]

Both are great. The small vel. diff. is not a game changer ...

+1

Best bet is top buy the rifle you like best, whichever it comes in. For non-handloaders, the Win Mag is generally the better choice.

[SHOOTALL]

I have the 300 Win Mag son has 300 Wby . The Wby kicks hard , might be why some call it inaccurate. They say the faster you start a bullet the faster it sheads speed and at some point the Win m. will over come the Wby m. But will it happen at a pratical range ? That said there may be a need for the extra power the Wby brings much like the 300 win over the 30-06 . But keep in mind a 300 win mag will do most if not all of the normal hunting a wby will do at a savings in pain and cost over the years. My 338 WM was less felt recoil than the 300 wby mag.

[nomosendero]

at some point the Win m. will over come the Wby m. But will it happen at a pratical range

I can't figure that out since both can be loaded with the same bullets with the same BC!   If that were the case we could shoot further by loading lighter.

[Drilling Man]

at some point the Win m. will over come the Wby m. But will it happen at a pratical range

I can't figure that out since both can be loaded with the same bullets with the same BC!   If that were the case we could shoot further by loading lighter.

  Sounds to me like the 30-06 would be EVEN better then!   

  DM

[nomosendero]

Yea & it's never a bad choice anyway.

[charles p]

Bad physics.  If two identical bullets are fired at different velocities, the faster bullet will always remain faster - until impact.

[Lloyd Smale]

ive used them both for years and there both fine cartridges. I can say without reservation that in my experiences the weatherby hits harder. Sure you can say that it only is 150 fps faster but then the 300 win is about 150 fps faster then an o6 and few will argue that the mag hits harder then an o6. I can honestly say too that ive had less trouble finding accurate loads for the win mag then i have for the weatherby. Not that i cant get a weatherby to shoot well it just that they seem a bit more finiky. That may have something to do with the large variations in what the differnt manufactures use for a reamer to cut chambers in the weatherby and the fact that alot of them use a good amount of freebore when chambering. As to the win catching the weatherby that just isnt going to happen

[DJWright]

Hmmm, my .300 WM leaves the barrel at 300 fps faster then my .30-06 . Quite a difference there.

[Dand]

Once I attended a long range turkey shoot where we had a glass pie plate at a measured 440 yards. People shot everything from 220 swift to a 300 Wby mag off a wobbly card table.  We'd get one shot apiece then the next shooter was up. We did a lot of missing. We had a spotter near the target. Whenever the 300wby fired, our spotter commented about the strange crack those bullets made. I'm guessing it was the only load that was still super sonic at that range. Still, the owner missed. Only one to hit at that range was a trooper who borrowed my 300 win mag.  He was the best at doping the wind and trajectory. Also a commentary about run of the mill shooter accuracy.

[roper]

Once I attended a long range turkey shoot where we had a glass pie plate at a measured 440 yards. People shot everything from 220 swift to a 300 Wby mag off a wobbly card table.  We'd get one shot apiece then the next shooter was up. We did a lot of missing. We had a spotter near the target. Whenever the 300wby fired, our spotter commented about the strange crack those bullets made. I'm guessing it was the only load that was still super sonic at that range. Still, the owner missed. Only one to hit at that range was a trooper who borrowed my 300 win mag.  He was the best at doping the wind and trajectory. Also a commentary about run of the mill shooter accuracy.

got one question How many 30-06,308,270 and 300mag beside yous that the owner of the rifles missed the target with?

[nomosendero]

I'm guessing it was the only load that was still super sonic at that range.

Can't imagine why, a good 308 load is supersonic at 800 & the 175MK, 175& 185 berger & others can be supersonic at 1000 yds with proper loads. My guess is the trooper was the only one up to the task, but then again why shoot from a wobbly card table?
 

[Mauser]

I've owned both and like 'em both.  I think the Weatherby might be a little easier to hand load w/ heavy bullets (200 grain and up) because of the issue with the short neck on the Win.  For a non-handloader I would recommend the Win as factory loads can be found anywhere and for less $ than the Wea.

[nomosendero]

It's no trick to get 2,950+ out of a 200 in the 300WM, good for at least 1500yd. for targets.

I see where several are getting 2900-2950 with a 210Berger.

Her's the Army 220 gr. load, 2850 is pretty dang good for a 220

http://en.wikipedia.org/wiki/XM2010

[mcwoodduck]

They are both good answers to the same question.
The neck on the Winchest is a little short but that is so it will fit in a standard action.
The 300 WBY needs a Magnum action.  It is basiclly a 375 H&H necked to 308 or a 300 H&H Blown out at the shoulders like an Ackly improved.
The 300 Win so far has one the race of the 300 belted mags and is most likely in a shop if you need a box.
Prices of the ammo my also be a factor.  With the Winchester being 30 to 60 a box depending on bulllet
the Weatherby 300 ammo is no longer just loaded my Norma for weatherby but is still pricy starting at $50 a box and going up from there.  I think I saw a couple offering from Remington and Federal in the 300 WBY.