Pre-64 Winchester M70 - 9.3x64?

Hello HWL,

Yes. I am talking about that. The velocity differences for this 4 cartridges, 7x57 vs 7x64 and 9,3x62 vs 9,3x64, in factory loads are clear, by a good margin, around 200 f/s for the common bullet weights. In hand loads with similar pressures and barrel lengths, the differences are notably smaller, also by a good margin, 100 f/s or less!
This is not theory but reality. Anticipated by theory, by the way!
Best!

CF
 
I am guilty of the deviation of this thread original theme, fascinating one about the extremely rare, unknown until now, original Winchester 70 pre-64 9,3x64 Brenneke!
Would be very interesting to know more about this, and others, non-standard cartridges Win 70 pre-64 factory offerings!

CF
 
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Breath some life into this old thread with something interesting I found on Pre64.com.
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Funny it doesn’t mention which 9M/M?
 

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9x57 is correct.
 
9x57 is correct.
Agreed!…. However, notice the article mentions .300win as a catalogue caliber but not .300H&H?

.300win didn’t come out until 1963; I personally used to own a .300H&H Supergrade and the barrel stamping was “.300 Magnum”

1D46C858-D92B-437F-B1AD-03B25A95B0B5.jpeg


The next time I’m in San Antonio; we are going to take the stock off the 9.3x64 rifle and see what the factory bore diameter stamping is on the barrel.
 
Agreed!…. However, notice the article mentions .300win as a catalogue caliber but not .300H&H?

.300win didn’t come out until 1963; I personally used to own a .300H&H Supergrade and the barrel stamping was “.300 Magnum”

View attachment 511470

The next time I’m in San Antonio; we are going to take the stock off the 9.3x64 rifle and see what the factory bore diameter stamping is on the barrel.
My 300 H&H is also marked 300 Magnum.
 
Fantastic rifle and cartridge. I am caretaking one built on a Lefty Ruger M77.
 

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