Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login
Site Notices
9/22/2017 12:11:25 AM
Posted: 9/27/2005 6:18:04 AM EDT
[Last Edit: 9/27/2005 6:18:53 AM EDT by _DR]
What determines if this is possible, obviously the bore must be 7.62mm, but what surplus rifle calibers have a chamber than can be reamed out to accept a 7.62x51 cartridge?

Are there any?

Does anyone know of anyone who does this kind of gunsmithing? Is it expensive?
Link Posted: 9/27/2005 6:53:45 AM EDT
There are various chamber adapters available to do the job.

I have an old Spanish Civil Guard, M1916 Short Rifle that was changed from 7x57 Mauser to 7.62x51, with the use of one.

Chamber Adapters
Link Posted: 9/27/2005 7:13:11 AM EDT

Originally Posted By osprey21:
There are various chamber adapters available to do the job.

I have an old Spanish Civil Guard, M1916 Short Rifle that was changed from 7x57 Mauser to 7.62x51, with the use of one.

Chamber Adapters



What holds them in place so the don't get extracted witht the cartridge?
Link Posted: 9/27/2005 7:43:06 AM EDT

Originally Posted By _DR:

Originally Posted By osprey21:
There are various chamber adapters available to do the job.

I have an old Spanish Civil Guard, M1916 Short Rifle that was changed from 7x57 Mauser to 7.62x51, with the use of one.

Chamber Adapters



What holds them in place so the don't get extracted witht the cartridge?


Locktite™
Link Posted: 9/27/2005 7:56:59 AM EDT

Originally Posted By osprey21:

Originally Posted By _DR:

Originally Posted By osprey21:
There are various chamber adapters available to do the job.

I have an old Spanish Civil Guard, M1916 Short Rifle that was changed from 7x57 Mauser to 7.62x51, with the use of one.

Chamber Adapters



What holds them in place so the don't get extracted witht the cartridge?


Locktite™



So how do you get them out afterwards?
Link Posted: 9/27/2005 8:01:15 AM EDT
[Last Edit: 9/27/2005 8:02:06 AM EDT by M4-TUNA]

Originally Posted By _DR:
What determines if this is possible, obviously the bore must be 7.62mm, but what surplus rifle calibers have a chamber than can be reamed out to accept a 7.62x51 cartridge?

Are there any?

Does anyone know of anyone who does this kind of gunsmithing? Is it expensive?

Are you wanting to use 7.62X51 in your 308 rifle? If so they are the same. I use surplus 7.62x51 in my 308 cal. AR10 all day long.
Link Posted: 9/27/2005 8:41:50 AM EDT
Osprey 21 - Does your M1916 Mauser have a 0.308 inch diameter bore? The 7 x 57 mm bore is 0.284 inches. I am not sure how a chamber adapter can 'squeeze' down a 0.308 inch projectile to work in a 0.284 diameter bore. Please enlighten me. Charles.
Link Posted: 9/27/2005 9:03:12 AM EDT

Originally Posted By 1911builder:
Osprey 21 - Does your M1916 Mauser have a 0.308 inch diameter bore? The 7 x 57 mm bore is 0.284 inches. I am not sure how a chamber adapter can 'squeeze' down a 0.308 inch projectile to work in a 0.284 diameter bore. Please enlighten me. Charles.



You are of course correct, I neglected to add in 'rebored' when I made the post.
Link Posted: 9/27/2005 11:37:49 AM EDT
Link Posted: 9/27/2005 2:52:17 PM EDT
[Last Edit: 9/27/2005 2:52:55 PM EDT by _DR]

Originally Posted By raf:
A few things must be taken into account here.

First and foremost, the action must be able to safely withstand the pressure generated by the new cartridge. for Mausers, this lets out anything but a 98 model, if you're going .308.

Second, the bolt and extractor must fit the case head of the new cartridge.

Third, the action length must not be too short. A too-long action can have a spacer fastened to the front of the magazine, thus preventing cartridges from shifting during recoil and possibly jamming the weapon.

Fourth, the best option, by far, is to rebarrel using a barrel chambered for the new cartridge. The caliber adapters mentioned above have their place, but many of them cause the bullet to have a long jump before it contacts the rifling in the barrel. Not exactly conducive to the best accuracy

I have bought Mausers in 7.62/.308 that were arsenal-converted, thus saving me the hassle of doing it myself, and I suggest you do the same.



Exactly what I would like to do. I once owned a fine Columbian 98K type mauser that had been arsenal converted to 7.62x51mm NATO and rollmarked by FN Herstal, sold it like an idiot, and have been looking for another for the last few years. The Israeli ones I have seen have all had poor bores. If you know of any sources please let me know. I know Charles Daly does aftermarket conversions, but I as looking for a surplus one.
Link Posted: 9/27/2005 4:55:40 PM EDT
Link Posted: 9/27/2005 5:53:39 PM EDT
The K31 can be redone in 308 with extensive work.
Top Top