February
S M T W T F S
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28
Who's Online Now
6 members (oohay, Mark II, RARiddell, DaveB, 2 invisible), 186 guests, and 12 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums10
Topics37,228
Posts526,325
Members14,246
Most Online462
Aug 5th, 2016
Previous Thread
Next Thread
Print Thread
#355326 01/28/14 08:59 PM
Joined: Feb 2006
Posts: 448
tunes Offline OP
Sidelock
***
OP Offline
Sidelock
***

Joined: Feb 2006
Posts: 448
7.7x62r

ever hear of this caliber??
saw a German double rifle chambered for it


"It's a good day for something"
tunes #355360 01/29/14 07:49 AM
Joined: Jul 2010
Posts: 544
Sidelock
**
Offline
Sidelock
**

Joined: Jul 2010
Posts: 544
Barnes lists a 7.7 X 60, if that is it. It's an old cartridge and appears to be based on the Mauser "A" base case. BP cartridge and obsolete for decades....and maybe even a century, which makes it my kind of cartridge! It is evident you don't have the rifle in hand but a chamber cast would tell you and if it is on the "A" base, 43 Mauser brass is available and it could be made.

Last edited by sharps4590; 01/29/14 07:51 AM.

NRA Benefactor 2008
NRA Patron 2007
NRA Endowment 1996
NRA Life 1988
sharps4590 #355510 01/29/14 05:01 PM
Joined: Jul 2012
Posts: 4,130
Likes: 84
Sidelock
**
Offline
Sidelock
**

Joined: Jul 2012
Posts: 4,130
Likes: 84
Actually,you can tell if it is on a "A"base(MB)case without a chambercast. If it is, the rimrecess will be deeper than normal and the chamber would measure around .518-.520" in front of the rimrecess( which it self usually measures around .595").If someone else owns the rifle, they will be more likely to let you measure the chamber(dial caliper works, with or without hole gage)than take it to make a chambercast.Note, this doesn't ID case length. FWIW you can make satisfactory cases from 45-90 cases.
Mike

Last edited by Der Ami; 02/01/14 03:33 PM.
tunes #356048 02/02/14 12:10 PM
Joined: Jul 2010
Posts: 544
Sidelock
**
Offline
Sidelock
**

Joined: Jul 2010
Posts: 544
I didn't get that very clear, did I....again...lol. I meant the chamber cast could tell you whether or not it was the 7.7 X 60, not if it was on the A base.

However...as is usual I learned something.


NRA Benefactor 2008
NRA Patron 2007
NRA Endowment 1996
NRA Life 1988
sharps4590 #356213 02/03/14 01:46 PM
Joined: Jul 2012
Posts: 4,130
Likes: 84
Sidelock
**
Offline
Sidelock
**

Joined: Jul 2012
Posts: 4,130
Likes: 84
Vic,
The point being that if it wasn't on an "A"base case, it wouldn't be 7.7x60R, and since someone else owned it, it would be difficult to make a chambercast.On the other hand, it wouldn't be hard to get the owner to allow measuring the head dia., and rimrecess depth. This could only exclude 7.7x60R, not show it is the caliber.
After further reflection and no additional information,I have come to the opinion that the rifle is likely chambered for a nominal 8mm cartridge. 7.7mm is often the bore diameter marked for 8mm barrels,along with 7.8 and sometimes 7.6mm.I believe the marking reported in the original posting is not the name of the cartridge, but the proof mark, showing bore(not groove or bullet)diameter and case length. If this is the case, it is likely chambered for a cartridge known as 8x62R Vierordt no 102. This cartridge is one of the several 8mm cartridges based on the British 360 Express case, which was adopted by the Germans and used for such cartridges as 8x57R/360 and 9.3x72R.Measurment of the chamber in the casehead area could also disprove my theory and exclude the 8x62R Vierordt.If I am correct, the diameter should be around .429" + a couple thousanths.
Mike


Link Copied to Clipboard

doublegunshop.com home | Welcome | Sponsors & Advertisers | DoubleGun Rack | Doublegun Book Rack

Order or request info | Other Useful Information

Updated every minute of everyday!


Copyright (c) 1993 - 2022 doublegunshop.com. All rights reserved. doublegunshop.com - Bloomfield, NY 14469. USA These materials are provided by doublegunshop.com as a service to its customers and may be used for informational purposes only. doublegunshop.com assumes no responsibility for errors or omissions in these materials. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANT-ABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. doublegunshop.com further does not warrant the accuracy or completeness of the information, text, graphics, links or other items contained within these materials. doublegunshop.com shall not be liable for any special, indirect, incidental, or consequential damages, including without limitation, lost revenues or lost profits, which may result from the use of these materials. doublegunshop.com may make changes to these materials, or to the products described therein, at any time without notice. doublegunshop.com makes no commitment to update the information contained herein. This is a public un-moderated forum participate at your own risk.

Note: The posting of Copyrighted material on this forum is prohibited without prior written consent of the Copyright holder. For specifics on Copyright Law and restrictions refer to: http://www.copyright.gov/laws/ - doublegunshop.com will not monitor nor will they be held liable for copyright violations presented on the BBS which is an open and un-moderated public forum.

Powered by UBB.threads™ PHP Forum Software 7.7.5
(Release build 20201027)
Responsive Width:

PHP: 7.0.33-0+deb9u11+hw1 Page Time: 0.045s Queries: 24 (0.025s) Memory: 0.8094 MB (Peak: 1.8991 MB) Data Comp: Off Server Time: 2023-02-02 01:07:17 UTC
Valid HTML 5 and Valid CSS