Could my fellow shooters from Europe p0lease set me straight on 8m cartridge potential and dimesnions please? I'm interested in a real world comparison of 8x57IS, 8x60S and 8x64S Brenneke. Is the x64 case off the 9.3x64 Brenneke or a standard x57 case?

Thank you in advance.

You have already listed the cases from low to higher volume - next step would be cases like 8x75RS and 8x68S. Sorry, I can't provide the actual case volumes.

Figure that an 8x64S can be loaded to about 2700-2800 fps with a 200 grs bullet. Our very own "Monestary Forester" gets 2840 fps with a 196 grs bullet - probably in a 24" barrel. I got 2700 fps with the same powder and charge, 200 grs Nosler AB in a 22" barrel. The 8x60S and the 8x57S are not far behind - 100-200 fps, maybe... Factory S&B 8x64S 196 grs ammo runs about 2600 fps from my 22" barrel. I have not shot the 8x64S for that long, but what I have seen of it I like - modest recoil and great killing potential. I'm sure the same could be said for either the 8x57IS or the 8x60S.

quote:

Originally posted by Planemech:Is the x64 case off the 9.3x64 Brenneke or a standard x57 case?

The 8x64S is NOT built on the same case as the 9.3x64. Rather, the 8x64S case is a stretched 8x57IS case - or a 7x64 necked up (more or less - minor variations in shoulder). The 9.3x64 on the other hand has had the case body diameter increased - it is essentially a short, fat .375 H&H designed to fit in a M98 Mauser action, but without the belt.

- mike

Mike Thank you very much on the 8x64 I could not find a drawing or data here in the states just that of the 9.3x64 Brenneke. The 8x64S is basically then an 8mm-06 and the x57 and x60 a variation with ballistic parity in the field.

8x57IS loaded to "modern" pressure it is then as dies and brass are easy to find.
Again my thanks

quote:

Originally posted by Planemech:
The 8x64S is basically then an 8mm-06 and the x57 and x60 a variation with ballistic parity in the field.

Well put!
- mike