Hey Guys

Would anyone know if the 8x57 mauser and the 8x68s share the same rate of twist? ie could a barrel originally intended for 8x57 be used for the more powerful round. Personally I can't see why not as they both use the same weight pills - the 8x68 just pokes them out faster!

Anyway watchyareckon?

Thanks

GG

Hello GG375
I reckon the 8x57 have a 1/9 twist and the 8x68 is a 1/11. (the data is printed in speers rel manual 11)

I don�t think its a problem to have a 8x57 barrel in 8x68, Light bullets might be a bit over stabilized but 220 - 250 grainers would probably work perfectly.

Fitting the 8x68 in a normal mauser magazine box would be the bigger issue.

All the Best

Jens

You can have a problem when reaming the 8x57, the 8x68 is a much bigger and your chamber might have to little metal left to be dangerous

GG375,
If You must improve the old warhorse 8x57 Mauser, take a look at the 8mm/06 or the 8x60S.
I have an old Mannlicher-shoenauer in 8x60S.
No magnum for sure, I get 2630 ft/s with 200 grain pills, and 54gr of Norma 203-B.

Of course they take the back seat compared to 8x68 in the 2900 ft/s or a bit more with certain powders (200 grain bullets).

All the best

Jens

I am assuming you are taking about a large ring mauser action. Lothar-Walther has contoured/chambered/threaded barrels for LR-Mausers for about $150. I am thinking of getting one my self, also in 8x68mm. Unless you have a very nice 8x57mm barrel, I dont think rechambering it would be worth while.

Kristofer

Guys

Thanks for your replies. I have a single shot rifle currently chambered for 7x57. A while back I decided to rebarrel this rifle to 8x57 Rimmed (you know - single shots and doubles should always be chambered for rimmed cartridges). So anyway I have ordered the 8mm barrel blank but in the meantime, like the whore I am, I have fallen in love with the idea of a 8x68s. I have a nice 1908 DWM Brazilian action sitting around doing nothing and wondered if I should forget about re barreling the single shot and throw the 8mm barrel onto the m98 as a 8x68s.

Then I started to wonder about the twist. Are they the same etc!! From what you guys are saying and from what I've read the 8x57 is usually 1 in 9" to 1 in 10" and the 8x68s is 1 in 11". This is all very confusing as the 8mm Rem Mag is also 1 in 10" and they all use the same range of .323" projectiles - so why the difference?

Sorry to be so long winded about this - just trying to understand.

What disadvantage would there be in using a 1 in 10 twist for the 8x68s which apparently normally uses a 1 in 11??

Thanks and Hooroo

GG

With a 1:10 barrel, I do not think you will have any advers affects. It is close enough to hardly matter. And if you are shooting the heavies like the 220 Hornady it may even be an advantage.

Don't be talked into a lesser 8mm. M98 in 8x68mm is pure class.

Kristofer

GG,

Here's a link to the Greenhill Formula. Should give you some idea what goes into twist rate calculations

http://www.geocities.com/CapitolHill/Lobby/1221/grn_hill.htm

also

http://www.z-hat.com/twistrate.htm

I did a Google search and came up with tons of pages on this topic

i think the twist will just stabilize heavy bullets better in 8x68S. Thats what this cartridge is for, anyway.

If you stay with your single shot, have you ever heard about a round called 8x75RS? A rimmed 8x68S ( nearly ).

It is reported to be a favourite of a fanatic hunter: Reichsj�germeister ( the third Reichs hunter master or top hunter ) Hermann G�ring.

In his secondary job I believe he had something to do with air force ...

Good Shootin�, Hermann

What action are you using? Will the 8x68 fit in a 98?