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kurusu

11-14-2013 11:34 AM

twist rate 1910 c96

Can anyone tell me the twist rate of a c96 Mauser made in 1910 (4 grooves).

kurusu

11-14-2013 12:17 PM

Made a mistake. Can a moderator move this thread to "off topic and other firearms" please.

sheepherder

02-20-2015 11:59 AM

1 Attachment(s)

Quote:

Originally Posted by kurusu (Post 244102)

Can anyone tell me the twist rate of a c96 Mauser made in 1910 (4 grooves).

Lyman's 45th Edition Reloading Handbook reads "Mauser Military; 5 1/2" barrel; 1 in 8" Twist"...That's the 7.63/30 cal barrel...

kurusu

03-06-2015 09:33 AM

What I still don't know if that twist rate is for C96s made after 1912 or for the earlier ones.

sheepherder

03-06-2015 05:02 PM

Pistols Of the World by Ian Hogg details the changes in the "C96" including the pitch of the rifling, but it uses a standard that I'm not familiar with...

Quote - "About 1903...the pitch of rifling was changed from the earlier 1/26 calibres to 1/18 in an endeavor to assure better stability"...And - "...Next major change...came in 1912...barrel...was now rifled with six grooves instead of four and with a twist of 1/25"...

I don't know the context of twist being measured in 'calibres'...Hogg was English, it may be an English rifling/twist measurement...

Hmmmm...From the Encyclopedia Britannica -

"The number of calibres is determined by dividing the length of the bore (from muzzle to breech face) by the bore diameter." I'll leave it to you to figure that out... :p

Karl	03-06-2015 06:01 PM

Caliber is always the bore diameter. The encyclopedia definition is correct but backwards from common usage. Example: my old ship had a 5" 38 caliber gun meaning the bore was 5" and the barrel length was 5" x 38. As I understand the information from Hogg, the fraction 1/26 means that the length of twist was 26 times the bore diameter.
KFS

kurusu

05-12-2015 10:05 AM

Quote:

Originally Posted by sheepherder (Post 267717)

Lyman's 45th Edition Reloading Handbook reads "Mauser Military; 5 1/2" barrel; 1 in 8" Twist"...That's the 7.63/30 cal barrel...

Quote - "About 1903...the pitch of rifling was changed from the earlier 1/26 calibres to 1/18 in an endeavor to assure better stability"...And - "...Next major change...came in 1912...barrel...was now rifled with six grooves instead of four and with a twist of 1/25"...

Great! now I now that the 1 in 8" is the twist rate between 1896 and 1903.:thumbup:

26 calibers x .308 = 8

And my 1910 C96 should be 1 in 5,5.

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