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Thread: Mini Mauser project

  1. #1
    Join Date
    Feb 2003
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    Lower Dakota Territory
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    Mini Mauser project

    At one of the local gun shops on the semi-daily stop to see what components may have come in, this little rifle was on the 'Used Rifles' rack. Times being what they are, anything decent that's used just doesn't stay around long so there had to be more to the story.

    It was an Interarms Mini Mark X chambered in 223. These are sometimes called 'Mini Mausers' but other than the bolt shroud, they are almost a duplicate of the little Sako L461 actions. They were imported in the '80's by Interarms, then by Charles Daly and finally by Remington as the Model 799. With the 20" barrel, it's a bit over 6 1/2 lbs.

    Paul Harvey time now ("...the rest of the story"). When I tried to pull the bolt back, it hung up and really got tight. It had a nice, newer Nikon 3-9 in low cheapo rings on a Weaver one piece base so I thought the bolt might simply be hitting the power ring on the scope. Nope.

    One of the sales guys stop by at that time and tells me about it. Seems like they took it in on trade for a new Christensen Arms double throw down, carbon fiber barrelled rig in some Creedmore KoolAide chambering and really didn't check it out. He says it shouldn't be on the rack and it's headed to their gunsmithing area to get checked out. Then he says he'd be really happy if it just went away so the shop charges wouldn't be assessed against it and get tacked on to the price before it came back out for sale. Guy must be a fly fisherman 'cuz he dropped that bait right in front of a fish that can't resist any gun that justs needs me to make it all good again. "Get it out of here with the scope and leave $419 at the register" was the final set of the hook. Had Jeremy Wade from River Monsters been standing there, I would have heard him say: "Fish ON!"

    As it looked:





    From working with some Sakos, I had a pretty good idea where to look for the bolt binding and sure enough, there it was. The guide bar for the bolt is retained by a small roll pin through the guide bar. The guide bar normally fits really snug in the raceway...maybe .003-.004 clearance. Around the roll pin area, the guide bar was bowed just slightly and had a raised area on both flat surfaces where the roll pin went through..making it tight in the rear raceway. A little light stoning and it worked smoothly. Here's the roll pin area:



    The back of the barrel had some scratch marks and sure enough...the extractor was hitting the back of the barrel. Some careful work with a diamond file took it back to about .010 clearance. Pics not great but you get the idea:



    Taking the barrelled action out of the stock showed a bunch of stress in the bedding as the barrel moved about 1/16" up at the front of the fore end when the actions screws were loosened. Pillars are in now and it will get bedded in a couple of days:





    My plan is to rescue the little devil, redo the stock, mount some good, lightweight bases and rings, feed it some good hand loads and see if we can't end up with a handy little rifle for predator calling or for walk around 'dog whacking w/o a lot of dollars invested.

    If there's any interest, I'll update this as it goes.

    Good shootin'. -Al
    Last edited by Al Nyhus; 02-13-2021 at 10:26 AM.

  2. #2
    Join Date
    Feb 2003
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    Poetry, Tex.
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    6,867
    Al, about 25yrs or so ago I bought one in 7.62x39 as a barreled action. I chambered it in 270X39AI at the urging of John Bunch. It was a great deer rifle for a young person. I rebarreled it in 220 Beggs and had Dean Zollinger build a beautiful stock for it. This was done about 8 years ago. No, I have not shot it. I really like the receivers.

  3. #3
    Join Date
    Jul 2016
    Location
    Surprise, AZ
    Posts
    329

    Interested

    I, for one, would be interested in seeing how this goes. It's always satisfying to take a problem gun and turn it into a shooter. Sounds like you're well on the way.

    GsT

  4. #4
    Join Date
    Feb 2003
    Location
    Wichita Falls, Texas
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    105

    Thumbs up Nice find/rescue Al !!

    I see a 17 "something" down the road......for stalking your favorite.........fox!

    Enjoy.....

    Friend Of The 17.......and 20
    Kevin

  5. #5
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    Quote Originally Posted by Kevin Gullette View Post
    I see a 17 "something" down the road......for stalking your favorite.........fox! Enjoy.....

    Friend Of The 17.......and 20. Kevin
    Kevin, you know me too well, my friend! We'll see if it responds favorably to the initial rubbin', first. Good, bad or ugly, the results will be posted here.

    Good shootin'. -Al

  6. #6
    Join Date
    Jan 2009
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    Ca.
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    851
    My buddy bought one years ago a heavy barreled 22-250. He put a synthetic stock on it and bedded it and he has shot numerous coyotes and ground squirrels with it. This goes all the way back to the 70's does anyone know who's barrels were being used at the time the accuracy is well above average and he still uses it today.

  7. #7
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    Floating in the bedding today. Now the hard part....resisting the urge to pull it out before 24 hrs.


  8. #8
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    Dec 2015
    Location
    Nampa Idaho
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    758
    I like your homemade rifle stand...using what you have on hand. I also noticed your Ohaus powder measure. Mine is a RCBS Ohaus that I have had for several decades. It has seen a lot of use and still ticking. Would never consider buying an electronic one.

    Mort

  9. #9
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    Mort, the home made cleaning cradle is close to 30 years old. The measure is actually a Redding 3BR that's been heavily tweaked. -Al

  10. #10
    Join Date
    Feb 2003
    Location
    Lower Dakota Territory
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    Whew.....

    A few anxious minutes this morning .

    The new aerosol release agent I was trying for the first time didn't to want to r-e-l-e-a-s-e.

    After a coffee refill, some pondering and a Lutheran-style genuflection, it did come apart. After a clean up and rounding of the edges, it shows less than .002 movement when the action screws are cracked. Sealed the exposed wood in the barrel channel and magazine area with some polyurethane clear and hit the gloss finish on the stock with some 00 steel wool soaked in acetone to knock the clear layer off. Next, the stock will get sanded and treated to some sort of top coat.

    Good shootin'. -Al

  11. #11
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    Lower Dakota Territory
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    With the action side rails just resting on a thin sliver of stock material, I removed the side receiver rail contacts areas and did a simple two point bedding job. Stock sides and mag box area have been enlarged for no contact. The recoil lug bottom was really rough with a lot of casting marks, etc. Thought about setting it up on the mill and taking .015-.020 off to make it flat. In the end, I did a skim coat of thinned JB Weld across the bottom of the lug to fill in the defects, prior to bedding. Plus, actual milling gets beyond the reach of most home gun tinkerers. I still want this to reflect what the average gunny guy can do at home.

    The sides and mag box area still needed to have some final work and sealing done here. Not much of a pic, just grabbed this with the phone, not a camera.


  12. #12
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    Bedding the bases to the receiver. Bases have the anodizing removed from the bottoms, bedding compound applied to the bases, and screws lightly started. Mold release wax everywhere where you don't want it to stick. You can see the bedding compound oozing:



    Some old Bushnell rings I use for bedding Weaver bases are put on the bases. Then, the ring lapping bar is set into the rings. The weight of the bar aligns the bases vertically and horizontally:


  13. #13
    Join Date
    Feb 2003
    Location
    Wichita Falls, Texas
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    105

    Cool Al......I've four words for ya.

    Paste wax......buff.....repeat.....

    But, I would enjoy helping you stalk a few sneaky fox. It was -8 degrees here(heck....I'm 20 miles south of the Red River!)yesterday......second only to a -12 day in 1947. Knowing that our current conditions are just a "nippy" Fall day in your hunting kingdom.......I may not survive a hunt up there.

    On the other hand, in June 1980 I was bass fishing in my tube.........at a record 117 degrees F.
    I didn't wanna get out of the stock tank.

    Kevin

  14. #14
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    Quote Originally Posted by Kevin Gullette View Post
    Paste wax......buff.....repeat..... Kevin
    I hear 'ya, Kevin. Paste wax always works! I love the stuff that Score High sends with the Pro Bed. I tried the aerosol release agent based on the results from a pretty savvy bedding guy. He uses Marine Tex so maybe that's the difference. 'Ya never know until 'ya try!

  15. #15
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    Fitted the rings and started lapping. This is after 15 strokes with the lapping bar....very, very little contact. No knock on the rings as there's just a lot of tolerances that can stack up. But that's why you lap and then bed the rings.

    As close to 100% contact between the bases and receiver and rings to scope tube gives a stress free mounting system that ensures repeatability. Repeatability is essential to accuracy. Also, once the rings are bedded they become pretty much 'universal' for any subsequent scopes. For ring bedding, AccraGlas Gel is better than any of the harder bedding style compounds. It has a percentage of Nylon in it that gives just enough flexibility to conform to the scope tubes w/o leaving any marks....similar to the Burris Posi Line inserts.


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