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264 Win Mag VS 270 Whby

 
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  #15  
Old 06-24-2012, 10:11 AM
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Re: 264 Win Mag VS 270 Whby

I don't think you can go wrong with either one of them for your intended purpose ... besides, it's not like it's going to be your last build. Whichever tickles your fancy at the moment ... I say go for it.

New bullets, powders, barrels, etc ... are changing the game tremendously. This include the mind sets established by of some of the early pioneers, i.e. Ackley, etc ...

I only have a 6.5x55 Swede for a .264 cal and is a carbine for them thick timber hunts. My current build in works is a .270 AI (just because lots of naysayers say I have nothing to gain - based on Ackley's book ... I'm sure I'll hear it from them , case in point .280 AI vs .270 AI.

For me, I started with what bullet to use ... I will be taking advantage of the Matrix 165/175 and the upcoming Berger (170 ???). It's going to be on a Savage 110 LA with Lilja 30", 1:8, 3-groove, #6 contour ...




That's what is so great about America, we have plenty of choices to choose from. What we do with them is a different story. Will see how it progress!

Good luck and happy safe shooting/hunting.
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  #16  
Old 06-24-2012, 10:56 AM
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Re: 264 Win Mag VS 270 Whby

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Originally Posted by lloydsmale View Post
barrel life between the two would be a minor thing too. The 264 has a slightly smaller bore and in theroy would have a bit more barrel wear but on the other hand the 270 wby is loaded to greater pressures and that would more then make up the differnce. Ill put it this way. If a guy had one of either of them it sure isnt going to be worth an argument to go out and buy the other thinking hes gaining anything. I have a 264 and love it. I dont have a 270 wby but almost bought one a couple times. Not because it was better and i didnt pass because it was inferior. Someday if the right deal comes along i still may buy one. Why? Because its fun to play with new guns and calibers.
The .264 mag has a 25 degree shoulder angle with a .254 neck length. A very poor neck / shoulder design at best. The T.P. will be well into the throat no matter whatkind of a load you shoot. The .270 mag has a shoulder angle that is about 45 degrees with a .39" long neck. That's a win win situation. But just as much as the larger shoulder length and angle help with barrel life, the longer neck also gives you better controll of the bullet as it enters the throat. Personally, I like the 7mm better than the other two, but the .270 will get the job done in spades
gary
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  #17  
Old 06-25-2012, 05:20 AM
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Re: 264 Win Mag VS 270 Whby

for such a poor design id look back at the 300 win mag which has a simular setup and has won quite a few long range shooting competions. Many more then the 300wby.
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Originally Posted by Trickymissfit View Post
The .264 mag has a 25 degree shoulder angle with a .254 neck length. A very poor neck / shoulder design at best. The T.P. will be well into the throat no matter whatkind of a load you shoot. The .270 mag has a shoulder angle that is about 45 degrees with a .39" long neck. That's a win win situation. But just as much as the larger shoulder length and angle help with barrel life, the longer neck also gives you better controll of the bullet as it enters the throat. Personally, I like the 7mm better than the other two, but the .270 will get the job done in spades
gary
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  #18  
Old 06-25-2012, 06:50 AM
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Re: 264 Win Mag VS 270 Whby

300wm doesn't suffer from those problems for one reason, it has a .044" bigger hole, which changes every thing.
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Old 06-25-2012, 07:53 AM
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Re: 264 Win Mag VS 270 Whby

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Originally Posted by 257stw View Post
I have a 264 wm & was thinking of building something else i have a ss rem long mag action sitting here doing nothing. Some guys i know shoot 270 whby's and tell me thats what I should build will i gain anything over the 264 to justify building a 270 whby ? Any thoughts ?
I read one of your earlier post about building a 6.5stw also interested in 270Wby vs 270WSM. I wished I could tell you I did endless research ran every ballistic table between the 264 mag vs 270Wby and I found the 270Wby better case but I didn't. I like the 270 cal build a 270 and 270WSM shortly have a 270Wby and it be one of my deer/elk rifles.

Nothing wrong with building 264 mag either so I'm not much help.
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  #20  
Old 06-25-2012, 04:35 PM
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Re: 264 Win Mag VS 270 Whby

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Originally Posted by lloydsmale View Post
for such a poor design id look back at the 300 win mag which has a simular setup and has won quite a few long range shooting competions. Many more then the 300wby.
I don't know about that. The last ten years or so the .300 WIn case is placed in the also ran groups in most 1000 yard shoots. The winning cases (30 caliber) are either .300 Weatherby or a sharp shouldered version of the .300 Weatherby (300 Jarrette, .300 Ackley mostly). Even the 6.5's are more common than the .300 Winchester
gary
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  #21  
Old 06-25-2012, 04:40 PM
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Re: 264 Win Mag VS 270 Whby

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Originally Posted by backwoods83 View Post
300wm doesn't suffer from those problems for one reason, it has a .044" bigger hole, which changes every thing.
The .300 Win. Mag does have one major draw back that cannot be overcame easilly. It dosn't do really long high B/C bullets as well as the others do. The bullets end up being seated back into the shoulder in most rifles. Even a .308 Norma Mag handles long bullets better.
gary
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