Portuguese Mauser

Mara · April 19, 2019, 08:29 PM

I need a little help. I have a Portuguese Mauser that says 6.5x58, but the bullet falls right out. Is there a way to tell if this has been modified to a 7x57 or a 8x57 by the markings?

**44 AMP** · April 20, 2019, 12:38 AM

Can't help with the markings, sorry. My references describe the 1904 rifle, and point out how it has several differences from the standard Mausers, and how in the 1930s some were converted to 7.92mm (8mm Mauser)

That might be what you have.
Hope this helps

any decent gunsmith will be able to measure the bore and do a chamber cast to see exactly what it is. Would be smart to have the headspace checked, once its determined what it should be.

Mara · April 20, 2019, 06:18 AM

thank you for your help

ernie8 · April 21, 2019, 09:10 AM

Most of the M-1904 Mauser-Vergueiro rifles found in this country will the 1904/39 . They were rebuilt and chambered in 8x57mm Mauser [ 7.92 mm ] . They were converted into short rifles and will have large front sight wings . The rear sight will also be modified . They fire standard 8mm Mauser ammo .

April 19, 2019, 08:29 PM	#1
Mara Junior Member Join Date: March 25, 2018 Posts: 6	Portuguese Mauser I need a little help. I have a Portuguese Mauser that says 6.5x58, but the bullet falls right out. Is there a way to tell if this has been modified to a 7x57 or a 8x57 by the markings?

April 20, 2019, 12:38 AM	#2
44 AMP Staff Join Date: March 11, 2006 Location: Upper US Posts: 28,820	Can't help with the markings, sorry. My references describe the 1904 rifle, and point out how it has several differences from the standard Mausers, and how in the 1930s some were converted to 7.92mm (8mm Mauser) That might be what you have. Hope this helps any decent gunsmith will be able to measure the bore and do a chamber cast to see exactly what it is. Would be smart to have the headspace checked, once its determined what it should be. __________________ All else being equal (and it almost never is) bigger bullets tend to work better.

April 20, 2019, 06:18 AM	#3
Mara Junior Member Join Date: March 25, 2018 Posts: 6	thank you for your help

April 21, 2019, 09:10 AM	#4
ernie8 Senior Member Join Date: October 9, 2018 Posts: 217	Most of the M-1904 Mauser-Vergueiro rifles found in this country will the 1904/39 . They were rebuilt and chambered in 8x57mm Mauser [ 7.92 mm ] . They were converted into short rifles and will have large front sight wings . The rear sight will also be modified . They fire standard 8mm Mauser ammo .