Well, the board is either fixed, or it's going to run terribly. Cross your fingers and hope for the best. I'm at my technical limit right now.

9mm hunting rifle barrel

Post Reply
Message
Author
Hammerdown
Member
Member
Posts: 159
Joined: Fri Jun 02, 2017 10:45 pm
Age: 47
Location: SEPA
United States of America

9mm hunting rifle barrel

#1 Post by Hammerdown » Tue Mar 05, 2019 6:47 pm

Got a barrel in some type of 9mm/.35" caliber hunting round. Can anyone help with the markings? Thanks
100_4973 (2).JPG
100_4983 (2).JPG
100_4981.JPG
100_4979 (2).JPG
Captain Obvious, you have never failed me!

DaleH
Member
Member
Posts: 202
Joined: Sun Jun 04, 2017 9:24 pm
Age: 57
Location: Mass, USA
United States of America

Re: 9mm hunting rifle barrel

#2 Post by DaleH » Wed Mar 06, 2019 12:49 am

My guess, pre-WW1 9.3mm barrel. See German proof marks, see: https://www.germanguns.com/tech-corner.html , as I recognize the B and the U proof marks. Marks showing crowns over the letters B = Beschuss = proof load fired and U = Untersuchung = inspected/viewed for defects, (proof approved).

The '108,49' (gauge) or 0.350 (inch) is also that of the largest plug gauge diameter that would fit in the bore, not the groove.

From that link:
Rifle Gauge Table
A brief table that is pretty helpful for pre-WWI German rifles shows the use of fractional 'gauge' numbers for barrel diameters. This was largest plug gauge diameter that would fit in the bore. The British proof law of 1868 had set up standard gauge sizes from .300" (172.28 gauge) to .450" (51.05 gauge) in .010" increments in the same sense that a shotgun bore is gauged, by the number of round lead balls of that diameter that make a pound. The Germans adopted this somewhat awkward system as well.


Somewhere at home I have some of those pages in German translated to English, but in PDF form, that tell more about the B and U proof marks.

Hammerdown
Member
Member
Posts: 159
Joined: Fri Jun 02, 2017 10:45 pm
Age: 47
Location: SEPA
United States of America

Re: 9mm hunting rifle barrel

#3 Post by Hammerdown » Wed Mar 06, 2019 7:32 pm

Thank you, I definitely know more know then when I got this barrel.
It's weird they use the same gauge as shotguns to determine a rifled barrels bore before rifling.
I was hoping the " 9,0 H " would tell what round it would be for. I was thinking a 9x57 but it maybe a 9.3x62. I may have to make a wax cast of the chamber to be sure.
Captain Obvious, you have never failed me!

Post Reply

Return to “General Gunsmithing”

Who is online

Users browsing this forum: No registered users and 1 guest