7 X 64 necked up to 8mm (although it is a factory cartridge, at least in Europe). Think 8mm-06 and you have about the right idea. Brass is a lttle longer (1mm), but not enough to worry about. - Dan
[ 04-08-2003, 20:26: Message edited by: dan belisle ]
Posts: 5285 | Location: Alberta | Registered: 05 October 2001
Should be no problem with length forming .30-06 to 8x64, but I would probably start with .35 Whelen cases and neck them down in stages until they were a tight fit in the chamber headspace-wise, then load and fire form. Having the .35 Whelen headstamp will also help keep the completed 8x64 rounds out of anybody's '06 down the road, too.
Posts: 978 | Location: paradise with an ocean view | Registered: 09 April 2002
fla3006 - there have been several long threads about the 8x64 here in the boards, in the past. A search will yield. Is there anything you would like to know specifically ?
Regards, Carcano
Posts: 2452 | Location: Old Europe | Registered: 23 June 2001
Carcano- Thanks, I'll do a search. I found a Brno in 8x64, can't decide whether to buy it, not familiar with the 8x64, was worried about ability to make ammo, should be a stout round.
Posts: 9487 | Location: Texas Hill Country | Registered: 11 January 2002
You can make it from 30-06 or, as mentioned the 35 Whelen. 35 Whelen would probably be easier. You even occasionally come across original brass and ammo, but not often. Carcano can let you know where in Europe you could order it. On this side of the pond, I would suggest Old western Scrounger as a first stop. A Brno in 8 X 64 would be a very nice big game rifle indeed. - Dan
Posts: 5285 | Location: Alberta | Registered: 05 October 2001
8x64 S ammo from Sellier & Bellot is fairly easily available in the USA - and it's cheap ! To get original Brenneke factory loads, now that's indeed another story...
An excellent and very versatile cartridge.
Regards, Carcano
Posts: 2452 | Location: Old Europe | Registered: 23 June 2001
Doesn't COTW list the 8x64's parent case as the 9.3x62? If that is the case, the 7x64's case is too small in diameter to use to form the 8x64. Wouldn't this cause a dangerous condition if the 7x64 and its narrower diameter case were used to make 8x64 brass? I recall seeing a picture of a 7x64 fired in a 280 Remington chamber, and the case was ruptured completely all the way down one side...
Posts: 454 | Location: Califon, NJ USA | Registered: 18 January 2002
A .004" at the base and a .002" at the shoulder isn't really enough to worry about, between 7 X 64 and 8 X 64. The differance between 8 X 64 and 30-06 is even less. One pass of new -06 brass through a 8 X 64 resizing die and presto: 8 X 64 brass. - Dan
Posts: 5285 | Location: Alberta | Registered: 05 October 2001
quote:Originally posted by dan belisle: The difference between 8 X 64 and 30-06 is even less. One pass of new -06 brass through a 8 X 64 resizing die and presto: 8 X 64 brass. - Dan
I had slight concerns about the possible necessity of an auxiliary shoulder (based on the longer neck of the -06). But if this be so: all the better and all the easier !
Thank you Dan.
Carcano
Posts: 2452 | Location: Old Europe | Registered: 23 June 2001
fla3006, steve is right! Use .35 Whelen or .338/'06) brass so you get safe headspace. Or, you can neck '06 brass UP to .338 before sizing, so you get some kind of shoulder in the correct spot for headspacing before fire-forming.
Exactly what calibre are we talking about? As with some other German 8 mm's it's important to know if it is 8x64 or 8x64S. The "old" 8mm needs a .318 bullet and the 8mmS needs a .323 bullet.
quote:Originally posted by carcano91: Always the "S" variant, unless otherwise indicated ;-).
Carcano
Hmmm, I think I'll side with Dutchgus on this one. Unless noted explicitly as 8x64S, don't load .323 (8mm) bullets unless you have had your bore slugged. - mike
Posts: 6653 | Location: Switzerland | Registered: 11 March 2002
Well, Nonte says to use .30/06 brass to form it, so I guess that is also acceptable.
The 8X64 came in both the "S" and "J" bore sizes, ie, .323" or .318", so do slug the bore. If the gun is an original BRNO in all respects, including the barrel, I'd be willing to bet it is a .323", but I'd slug it anyway! If it's a .323", you have a lot more bullet choices!
However, if it's an old BRNO in good to excellent shape, I'd buy it regardless! These are gems!!
quote:Originally posted by mho: Originally posted by carcano91: Always the "S" variant, unless otherwise indicated ;-). Hmmm, I think I'll side with Dutchgus on this one.
I don't think there is actually any difference between Dutchgus, you, and me on this point. We may just have had different things in mind.
I referred to the question "what are we talking about", and indeed all of the current discussions here dealt with the 8x64S (or 8x60S) as a potential rechambering option for the 8x57IS, or as a new cartridge choice of its own. Nobody would probably build a new gun in .318" instead of .323" - there are just too few good bullets. The last old TIG stocks in .318" were sold out in the early 1990s at a German dealer.
Whereas the two of you - very reasonably - pointed out that one should never assume an old 8mm gun - and especially NOT an old sporter rifle - to have the S bore and not the "I" bore. I fully agree with you here.
Best regards and thanks, Carcano
Posts: 2452 | Location: Old Europe | Registered: 23 June 2001
![[Wink]](images/icons/wink.gif){kind=icon}