on the barrel with 7.62X51 CETME? This chambering..while the physical appearence of the cartridge is near identical to the 7.62 Nato/.308 Winchester..it is in appearence only..The CETME is a LOADED DOWN VERSION that operates at a much lower pressure than the stanadrard 7.62 Nato/.308 Winchester. The CETME is a less than 40,000 CUP load and the nato/Win round is a 60,000 CUP load an will(eventually) take one of the converted Spanish Mausers apart..and..perhaps...YOU with it! Make sure of what you have..If you post all the markings and a full discription..including the chambering..then a positive ID will be made more easily...The market has a number of these conversions..often mis-marketed as being for the .308 Win....Zeke
Numrich Archiver
Joined: February 2010
Posted: July 13, 2008 06:55 PM
on the barrel with 7.62X51 CETME? This chambering..while the physical appearence of the cartridge is near identical to the 7.62 Nato/.308 Winchester..it is in appearence only..The CETME is a LOADED DOWN VERSION that operates at a much lower pressure than the stanadrard 7.62 Nato/.308 Winchester. The CETME is a less than 40,000 CUP load and the nato/Win round is a 60,000 CUP load an will(eventually) take one of the converted Spanish Mausers apart..and..perhaps...YOU with it! Make sure of what you have..If you post all the markings and a full discription..including the chambering..then a positive ID will be made more easily...The market has a number of these conversions..often mis-marketed as being for the .308 Win....Zeke
SAAMI lists the .308 Winchester at 52,000 CUP. I believe the 60,000 you are refering to would be psi. I could be wrong on this.
Either way, you are entirely correct that exceeding the recomended 46,000 CUP limit for small ring Mausers is an accident waiting to happen. Especialy since they do not incorporate the gas deflection system of the '98's. If the action doesn't actualy let go you still will have the lugs setting back and increasing headspace to an unsafe level.
Stick to rounds like the 7 mm Mauser, .250 & .300 Savage, .257 Roberts, etc. Better to err on the side of safety.
Numrich Archiver
Joined: February 2010
Posted: August 3, 2008 07:34 AM
SAAMI lists the .308 Winchester at 52,000 CUP. I believe the 60,000 you are refering to would be psi. I could be wrong on this.
Either way, you are entirely correct that exceeding the recomended 46,000 CUP limit for small ring Mausers is an accident waiting to happen. Especialy since they do not incorporate the gas deflection system of the '98's. If the action doesn't actualy let go you still will have the lugs setting back and increasing headspace to an unsafe level.
Stick to rounds like the 7 mm Mauser, .250 & .300 Savage, .257 Roberts, etc. Better to err on the side of safety.
I think the La Coruna Mausers were chambered for 8X57. They have suspect metallurgy and are usually not considered for rebarreling to other calibers. They are of the large ring design.
Numrich Archiver
Joined: February 2010
Posted: August 3, 2008 07:49 PM
I think the La Coruna Mausers were chambered for 8X57. They have suspect metallurgy and are usually not considered for rebarreling to other calibers. They are of the large ring design.
Paul, I would apply that same standard to any of the late war firearms used by the Nazi's, Personally I am extremely leery of any of the current offerings of Mausers being released for public sale by the former USSR. If I were to use(read shoot or rebarrel) any on these electric pencil marked LRM, a complete blueprinting and a re-heat treat of the reciever and bolt..after all these are battlefield pick ups no one knows exactly what happened to them before they were arsenal refinished by the USSR..remeber..those Troops that were to be issued these LRM were in a last ditch mode and both the firearm and the shooter were consider expendable! Just my thought!
Numrich Archiver
Joined: February 2010
Posted: August 3, 2008 07:56 PM
Paul, I would apply that same standard to any of the late war firearms used by the Nazi's, Personally I am extremely leery of any of the current offerings of Mausers being released for public sale by the former USSR. If I were to use(read shoot or rebarrel) any on these electric pencil marked LRM, a complete blueprinting and a re-heat treat of the reciever and bolt..after all these are battlefield pick ups no one knows exactly what happened to them before they were arsenal refinished by the USSR..remeber..those Troops that were to be issued these LRM were in a last ditch mode and both the firearm and the shooter were consider expendable! Just my thought!
Thanks every one. Sorry to get back so late. the front of the receiver on the Spanish Mauser is marked. FABRICADEARMAS LACORUNA 1956. It is a large ring Mauser with standard barrel dimensions and thread size and count. The side of the receiver ring is marked Cal 7.52 and two square proof marks. Farther back on the receiver is the serial number 2N-582. All the parts including the bolt have matching serial numbers. There are no import marks.
Numrich Archiver
Joined: February 2010
Posted: August 3, 2008 11:40 PM
Thanks every one. Sorry to get back so late. the front of the receiver on the Spanish Mauser is marked. FABRICADEARMAS LACORUNA 1956. It is a large ring Mauser with standard barrel dimensions and thread size and count. The side of the receiver ring is marked Cal 7.52 and two square proof marks. Farther back on the receiver is the serial number 2N-582. All the parts including the bolt have matching serial numbers. There are no import marks.
it is unusal for a reciever to be marked with the caliber. That is normally reserved for the barrel as the reciever can often be re-barreled..as you plan to do in any number of calibers..This is a guess, but I would think that the reciever being stamped with a caliber is an arsenals way of recording, first hand, to any future armorer, that the action has been modified..maybe via a heat treat process or magazine opening modifications to ease any feeding issues. It may be possible to access the Arsenal records..on-line and ascertain just what this change is, Bear in mind that it doesn't necessarily indicate the action stronger! Most any machine shop can run a Rockwell Hardness or Brinell Hardness test for you and a vernier caliper can tell you if the physical dimensions have been altered. If you need it, I can supply the name of a company that routinely re-heat treats Mauser actions and bolts.
Numrich Archiver
Joined: February 2010
Posted: August 4, 2008 12:19 PM
it is unusal for a reciever to be marked with the caliber. That is normally reserved for the barrel as the reciever can often be re-barreled..as you plan to do in any number of calibers..This is a guess, but I would think that the reciever being stamped with a caliber is an arsenals way of recording, first hand, to any future armorer, that the action has been modified..maybe via a heat treat process or magazine opening modifications to ease any feeding issues. It may be possible to access the Arsenal records..on-line and ascertain just what this change is, Bear in mind that it doesn't necessarily indicate the action stronger! Most any machine shop can run a Rockwell Hardness or Brinell Hardness test for you and a vernier caliper can tell you if the physical dimensions have been altered. If you need it, I can supply the name of a company that routinely re-heat treats Mauser actions and bolts.
Thanks again for your help. The receiver ring is 1.41 and has not been altered. The head of the Brownells action wrench fit very tight. What should the Rockwell Hardness or Brinell Hardness be on a Mauser 98 action?
I would like the name of the company that routinely re-heat treats Mauser actions and bolts. Les
Numrich Archiver
Joined: February 2010
Posted: August 4, 2008 06:11 PM
Thanks again for your help. The receiver ring is 1.41 and has not been altered. The head of the Brownells action wrench fit very tight. What should the Rockwell Hardness or Brinell Hardness be on a Mauser 98 action?
I would like the name of the company that routinely re-heat treats Mauser actions and bolts. Les
Les, the outfit i use for heat treating is: Blanchard Metal Processing...1115 South Pioneer Road....Salt Lake City, Utah 84125...it has been a while..maybe 4-5 years but I beleive this is still valid. Approx C35-C40 for exterior readings is common on M-98 mausers and interior readings of 22c to 30C If you get a copy of jerry Kuhnhausens book titled "THE MAUSER BOLT ACTIONS M91 Through M98...A Shop Manual" The heat treating is covered in detail as is the other work and specs for Mausers..both LRM and SRM and, in my opinion, is a must have for anyone working the Mauser's even in restorations. Zeke
Numrich Archiver
Joined: February 2010
Posted: August 4, 2008 07:16 PM
Les, the outfit i use for heat treating is: Blanchard Metal Processing...1115 South Pioneer Road....Salt Lake City, Utah 84125...it has been a while..maybe 4-5 years but I beleive this is still valid. Approx C35-C40 for exterior readings is common on M-98 mausers and interior readings of 22c to 30C If you get a copy of jerry Kuhnhausens book titled "THE MAUSER BOLT ACTIONS M91 Through M98...A Shop Manual" The heat treating is covered in detail as is the other work and specs for Mausers..both LRM and SRM and, in my opinion, is a must have for anyone working the Mauser's even in restorations. Zeke
La Coruna did indeed make 98 style mausers designated 1943. They were 8X57. After the war, while they were screwing with a really weird cartridge for their prototype assault rifle, the CETME, they converted many rifles from 8mm to 7.62x51 NATO. The 1916 is the most infamous, as it was made in the standard configuration, out of old 1893 mausers, and would be dangerous with any modern ammo. The CETME round was originally to have an alumunum bullet, light, but fast, and low pressure for a blowback auto rifle. Didn't work. In the 50's, they rebarreled more 93 Mausers to that chambering, called them FR7, and gave them a straighter stock, tall sights, and a bunnyhole where the CETME gas piston was to be, thus giving training tools during the CETME's development. The funny cartridge failed, they adopted the 7.62 Nato round, and converted a bunch of 1943 98 style rifles also to the CETME configuration, but was able to use the Nato ammo. They are named FR8. They have a high 3 position peep sight on the rear, high CETME site on the front, and a straight bolt handle. I have one, use mil-surp .308, and it shoots like a quart of gin. Scope mounting would be a challenge, but if I wear my glasses, it is a great shooter out to 200 yd. I've not shot commercial .308, maybe I shouldn't, but don't have to.
Numrich Archiver
Joined: February 2010
Posted: August 6, 2008 08:58 PM
La Coruna did indeed make 98 style mausers designated 1943. They were 8X57. After the war, while they were screwing with a really weird cartridge for their prototype assault rifle, the CETME, they converted many rifles from 8mm to 7.62x51 NATO. The 1916 is the most infamous, as it was made in the standard configuration, out of old 1893 mausers, and would be dangerous with any modern ammo. The CETME round was originally to have an alumunum bullet, light, but fast, and low pressure for a blowback auto rifle. Didn't work. In the 50's, they rebarreled more 93 Mausers to that chambering, called them FR7, and gave them a straighter stock, tall sights, and a bunnyhole where the CETME gas piston was to be, thus giving training tools during the CETME's development. The funny cartridge failed, they adopted the 7.62 Nato round, and converted a bunch of 1943 98 style rifles also to the CETME configuration, but was able to use the Nato ammo. They are named FR8. They have a high 3 position peep sight on the rear, high CETME site on the front, and a straight bolt handle. I have one, use mil-surp .308, and it shoots like a quart of gin. Scope mounting would be a challenge, but if I wear my glasses, it is a great shooter out to 200 yd. I've not shot commercial .308, maybe I shouldn't, but don't have to.
FWIW- the SAAMI specs for 7.62 NATO are about 55000 CUP- and the spec for .308 Winchester is 60000 CUP. The CETME is definitely a "weak sister", but once again, 7.62 NATO is NOT .308 Winchester.
Numrich Archiver
Joined: February 2010
Posted: August 6, 2008 11:58 PM
FWIW- the SAAMI specs for 7.62 NATO are about 55000 CUP- and the spec for .308 Winchester is 60000 CUP. The CETME is definitely a "weak sister", but once again, 7.62 NATO is NOT .308 Winchester.
my rifle is marked fabricadear below that it reads la coruna 1956. on the right side it says cal 762. can anyone tell me how to mount a scope. please e-maial me at kysteve10@yahoo.com
Numrich Archiver
Joined: February 2010
Posted: November 8, 2008 12:57 PM
my rifle is marked fabricadear below that it reads la coruna 1956. on the right side it says cal 762. can anyone tell me how to mount a scope. please e-maial me at kysteve10@yahoo.com
Steve: the receiver has to be drilled and tapped for scope bases and possibly the clip loading hump removed. then the bolt has to be bent to clear the scope and the safety has to be changed out to one that will work under the scope. this is not a do it yourself job. there are other ways to mount a scope including one that clamps to the receiver but the scope will be too high and may not be satisfactory. also a pistol scope mount that replaces the rear open sight. if the gun is original it probably would be best to leave it alone. a newstevens model 200 comes in popular calibers and retails for about 375.00, less at the discount marts.
Numrich Archiver
Joined: February 2010
Posted: November 8, 2008 02:18 PM
Steve: the receiver has to be drilled and tapped for scope bases and possibly the clip loading hump removed. then the bolt has to be bent to clear the scope and the safety has to be changed out to one that will work under the scope. this is not a do it yourself job. there are other ways to mount a scope including one that clamps to the receiver but the scope will be too high and may not be satisfactory. also a pistol scope mount that replaces the rear open sight. if the gun is original it probably would be best to leave it alone. a newstevens model 200 comes in popular calibers and retails for about 375.00, less at the discount marts.
