For you Mauser owners/experts, I need some ID help...

Glad to see a unique looking underside to that receiver -- no resemblance to mine, JB's or John's. Yep, mine's an FN alright. No doubt about it. And, there's no doubt about the origin of my barrel. Textbook Brazilian. I should add that my bore looks new, like brand new. So wherever it came from, the donor rifle was unfired or barely used. I think its kind of cool to have a custom sporter built with a variety of quality parts and assembled by a pro. DWM barrel and bolt, FN small ring receiver, Brno furniture and hardware. And, I suspect the bolt shroud is Turk... what a bastard child! :D

Oh, and I was wondering about the "93" or is that a "36" stamped on my barrel? You have something similar. Not sure what it means.

And, I also have a "3" on the underside of rear sight base area like your's.

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John303 said:
Except for the small ring and small barrel shank threads it is a FN 400 Supreme, very few where made - I wish I could find out how many. Is there any way you can confirm yours has the small shank barrel threads, which if true would make your action somewhat rare? The reason I say this is to confirm your action is not a large ring ground down. My curiousity has been aroused so I will dismantle the rifle just to check it out asap. Thanks for the compliment, a bit hard to get one on the NE site, it would seem. --- John 303.
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I do believe the 1908 Brazilian (DWM) Mauser used a large shank barrel, which is what is on my Mauser. So, small ring, large shank, unless the barrel threads were turned down -- more likely than turning down the receiver.
 
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The Brazilian 1908 does use a large ring thread on the barrel (I have a couple of these as well). It would be interesting to know if your FN action is a small ring with large ring threads or small ring with small ring threads.

It would be possible to turn the large ring barrel down to small ring threads.
 
jbmauser said:
The Brazilian 1908 does use a large ring thread on the barrel (I have a couple of these as well). It would be interesting to know if your FN action is a small ring with large ring threads or small ring with small ring threads.

It would be possible to turn the large ring barrel down to small ring threads.
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Well I am tempted to remove the barrel to find out, but I will pass for now. :)
I am going to assume a small ring with small ring threads. I understand that the barrel was installed by a well regarded gunsmith in BC, so its not insurmountable to believe that he turned down the large ring threads.

However, I will attempt to research further on FN small ring actions to determine thread size. The problem is that they're rather rare, and there's not much reliable information on the internet.
 
Because you have an action without the full c-ring it might be possible to determine barrel shank diameter with out removing the barrel. If you remove the bolt and look at the breech face, you should be able to see both sides of the barrel and possibly measure some how.
 
Well here you go: Lg Rg 98 = 12V Tpi - Dia, 1.100 - Thread Lgth. .625 - Shoulder also 1.100. Small ring G33-40 ( is small ring standard lght. 98 mauser and in all probability all small ring 98s) & 93,94,95, 96 all 12v Tpi - Dia, .980 - Thread Lght. on the 33-40 is .625 & .645 on the rest, Shoulder also .980. --- John303. **It looks like by measuring the shoulders you may be able to establish thread dia. and confirm the question without barrel removel**
 
jbmauser said:
Because you have an action without the full c-ring it might be possible to determine barrel shank diameter with out removing the barrel. If you remove the bolt and look at the breech face, you should be able to see both sides of the barrel and possibly measure some how.
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I think I was wrong, it looks to be "C-Type" ?

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John303 said:
Well here you go: Lg Rg 98 = 12V Tpi - Dia, 1.100 - Thread Lgth. .625 - Shoulder also 1.100. Small ring G33-40 ( is small ring standard lght. 98 mauser and in all probability all small ring 98s) & 93,94,95, 96 all 12v Tpi - Dia, .980 - Thread Lght. on the 33-40 is .625 & .645 on the rest, Shoulder also .980. --- John303. **It looks like by measuring the shoulders you may be able to establish thread dia. and confirm the question without barrel removel**
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Ya lost me my friend. I'm just a guy with a can and a paint brush! :D
 
Yes it is a full C ring type action. Very interesting. FN did produce an action with the C ring inner collar and commercial side wall (no thumb cut out). These typically had a charger hump and stripper clip guide on the rear receiver ring. I looked at some of the pics you have again and it appears this was removed on your action. Whoever did the work on your action, regardless if it is a large ring turned down or small ring did some very nice work. He obviously knew what he was doing and did it well.
 
Let try and explain, this is how I see it but might stand corrected, note that all the threads are 12 V shaped threads per inch, the diameter of the barrel shank threads on the large ring are 1.1 inch in diameter and on a small ring in all cases is .980 inch in diameter. On a Mauser the barrel torques against the C / H ring inside the front receiver ring - not what looks like a "shoulder" against the front of the receiver. So if everything was properly done, barrel installation wise, the barrel just in front of the front action ring should be the same diameter as the action threads. Measure the barrel just in front of the receiver on that shoulder if it's a small ring it should be .980 " if not it's a large ring made small. Going by your pictures it looks like a small ring, no big deal to turn a large shank barrel into a small shank. Perhaps some one more knowledgeable will chime in. HTH --- John303.
 
Further - the lack of C / H ring (at least I can't make one out in the pics.) has me puzzled, I believe the pre 98 Mausers did not have one but instead a cone shaped ring and I believe the barrel torqued to the front of the receiver ring. K could you post pics of the bolt (has it 2 / 3 locking lugs) and the bolt shroud and give me the length of the action + distance center to center of the quard screw spacing. Thanks --- John303.
 
OK, so I've posted a couple of pics that might help determine if you have small ring threads or large ring. The top pic is of a large ring action with small ring threads (Mauser model 1903). If you look through the ejector cut in the receiver and C-ring, you can see the different colors of the barrel metal and the receiver metal, and how they meet in relation to the receiver wall. The bottom pic is a large ring with large ring threads. Either of these actions could be turned down on the outside to small ring dimensions. I have seen pics of this done, and if done with the proper tools and know how, it can look like factory production.
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John303 said:
Let try and explain, this is how I see it but might stand corrected, note that all the threads are 12 V shaped threads per inch, the diameter of the barrel shank threads on the large ring are 1.1 inch in diameter and on a small ring in all cases is .980 inch in diameter. On a Mauser the barrel torques against the C / H ring inside the front receiver ring - not what looks like a "shoulder" against the front of the receiver. So if everything was properly done, barrel installation wise, the barrel just in front of the front action ring should be the same diameter as the action threads. Measure the barrel just in front of the receiver on that shoulder if it's a small ring it should be .980 " if not it's a large ring made small. Going by your pictures it looks like a small ring, no big deal to turn a large shank barrel into a small shank. Perhaps some one more knowledgeable will chime in. HTH --- John303.
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JB & John;

Thank you. I will measure later this evening when I get home from work.
 
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FN Small Ring Commerical Action and FN Large Ring Military Action -- "C-Type" broach, large ring standard barrel threads

It appears that both have large ring standard barrel threads and "C-Type" broach cuts.

The 1947 FN Military Mauser is all original, and sports an FN barrel.
The FN small ring Mauser sports a DWM-made Brazilian barrel.

Small Ring action on left
Large Ring action on right

Action screws on both Mausers are 7 13/16 inches apart.

I guess that means two possibilities:

1. Commercial small ring 98, large diameter barrel
2. Commercial large ring 98, large diameter barrel with turned down action
 
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