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View Full Version : Bubbaing a M48 action UPDATE POST#4, PIX ADDED


harmoniums
11-05-2011, 1:25 PM
I have an M48A barreled action with a nice bore that I've decided to stock and scope.

I'm going with an S&K no drill/tap scope mount.

http://www.scopemounts.com/rifle_pics/98mauser.jpg

I got this stock from ebay which I will glass bed to the action

http://www.ebay.com/itm/120793109896

I'm going with a Vortex Diamondback 4-12x 40mm scope :

http://www.vortexoptics.com/product/vortex-diamondback-4-12x40-riflescope-v-plex-reticle

As the scope mount is a bit high, I will be cutting a section out of the comb of the stock and installing adjustable riser hardware from these guys:

http://www.100straight.com/products/cspseitzstyle.htm

to give you an idea of what I mean by cutting the stock and using this hardware, I'm going for something like this:

http://i23.photobucket.com/albums/b393/jimby_99/_IGP6544.jpg

Finally, I'll be adding a sling swivel to the stock and a harris bi-pod

ElvenSoul
11-05-2011, 1:32 PM
These fit most Mausers

http://www.jmeckscopemounts.com/

not as ugly as the S&K.

harmoniums
11-05-2011, 1:38 PM
These fit most Mausers

http://www.jmeckscopemounts.com/

not as ugly as the S&K.

I disagree, I think they have a kind of home made look to them!
If the rifle turns out to be a shooter, I'll probably D&T the action though

harmoniums
11-12-2011, 3:05 PM
OK so all the bits and pieces came in.
First I put on a sling swivel stud to attach a harris bipod.
Its a machine screw that screws into a nut that you counter sink a hole for in the stock, then epoxy the whole thing in place.
Its rock solid and not going anywhere.

As said I used the S&K scope mount, a solid impressive well made piece.
I had to relieve the stock a bit to get it to sit nicely.
Its roughly done, I'll finish it nicely late.
The scope is a Vortex Diamondback, a freebie to me 4-12x40mm
The half bent bolt of the M48 just clears it, so no bolt bending!

Next up is to chop the comb out and install the riser hardware.

http://farm7.static.flickr.com/6220/6338744592_ea8629750c_b.jpg (http://www.flickr.com/photos/25517057@N00/6338744592/)
CIMG0108 (http://www.flickr.com/photos/25517057@N00/6338744592/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

http://farm7.static.flickr.com/6223/6337997089_0abc6ce9e2_b.jpg (http://www.flickr.com/photos/25517057@N00/6337997089/)
CIMG0117 (http://www.flickr.com/photos/25517057@N00/6337997089/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

http://farm7.static.flickr.com/6221/6338747376_ce5fb19631_b.jpg (http://www.flickr.com/photos/25517057@N00/6338747376/)
CIMG0112 (http://www.flickr.com/photos/25517057@N00/6338747376/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

harmoniums
11-12-2011, 5:03 PM
heres a few pics to show how the stock had to be relieved for the scope mount.
I dont have a router table so I did the rough fit with a coping saw and files.
(I'm no a woodworker at all so dont beat me up too bad ... the edges will be squared up tomorrow)

http://farm7.static.flickr.com/6050/6339051232_35acabd080_b.jpg (http://www.flickr.com/photos/25517057@N00/6339051232/)
CIMG0110 (http://www.flickr.com/photos/25517057@N00/6339051232/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

http://farm7.static.flickr.com/6222/6339062114_abc16f18a2_b.jpg (http://www.flickr.com/photos/25517057@N00/6339062114/)
CIMG0115 (http://www.flickr.com/photos/25517057@N00/6339062114/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

TheExpertish
11-12-2011, 5:27 PM
Looks good so far. What are your goals for this project results wise?

harmoniums
11-12-2011, 5:48 PM
Looks good so far. What are your goals for this project results wise?

If I can get 2moa out of this I'll be happy.
Ive got a bunch of that 8mm "sniper" ammo saved up from when it was cheap, so maybe that or better could be possible!

This rifle is actually my first attempt at sporterizing, so over and above the performance goals, it'll be my test bench to try out new things on (such as the adjustable comb I'll be putting in, if I screw it up, its only a $30 unmatched stock to be replaced)

vincewarde
11-12-2011, 6:12 PM
http://family.douloscomputer.com/yugo_scout.jpg

I bought this as a fairly good military example before I had my C&R at Big 5. I did the following:

Cut and crown the barrel at 19"
Cut down stock
Glass bedded action, free floated barrel
Hollowed out butt-stock to reduce weight
Added recoil pad.
Painted stock in digital camo
Added sling swivel studs
Had someone with more skills install extended and bent bolt handle
Installed "Bold trigger" (set at about 2lbs)
SK Scout Mount
BSA 2x Scope
Finally, I blued all the bright metal.

Before I swapped out the scope for a 2-7x, it weighed under 7lbs, now it's a bit above that. The last time I shot it off a bench with my 185gr handloads it put ten rounds into 1.25in. I love it!

Nothing beats building a gun just the way you want it.

As for your project, my only concern is that you may find it hard to shoot from prone.

harmoniums
11-13-2011, 9:52 PM
her she is as of tonight:

http://farm7.static.flickr.com/6234/6343400072_60490c6c45_b.jpg (http://www.flickr.com/photos/25517057@N00/6343400072/)
CIMG0120 (http://www.flickr.com/photos/25517057@N00/6343400072/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

I'm not real happy with the riser, I'm not much of a woodworker but did get it more or less installed straight, I'm just not sure a locked mechanism using setscrews is going to holt up to 8mm recoil.
It just feels a wee bit hokey.

McNally M.
11-14-2011, 12:28 AM
That thing looks a Transformer. Opti-Mauser Prime I'd call it.

Nice job. Wood work looks great. Hope you get some great shooting out of it. I'm still wanting to get my hands on a Yugo Mauser. Ergg...

harmoniums
11-14-2011, 11:39 AM
OK so here a few more pics

http://farm7.static.flickr.com/6034/6344485113_d8515a9909_b.jpg (http://www.flickr.com/photos/25517057@N00/6344485113/)
leftside_cropped (http://www.flickr.com/photos/25517057@N00/6344485113/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

http://farm7.static.flickr.com/6113/6342665613_6bdeb31dfe_z.jpg (http://www.flickr.com/photos/25517057@N00/6342665613/)
CIMG0123 (http://www.flickr.com/photos/25517057@N00/6342665613/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

For a craptacular woodworker like me the riser hardware didn't go very well.
(My father once said to me, on observing me trying to drive a nail into some wood "Jeez you think that nail would just hop right into that wood, what with all the threatening you're giving it")


I took the butt plate of the stock and attached it to an L shaped piece of sacrificial MDF via screws into the butt.

This held the stock so my band saw cut would be orthogonal to the centerline of the stock (flat and level when the rifles is standing straight).
This took some cursing and ignorance to get just right.

I used an 14TPI 1/4 inch blade on the bandsaw, I should have really used a finer saw (1/8 inch wide), and successfully brutally chomped the comb out.

The cut is pretty ragged and needs to be sanded down.

I then used a 7/8 and 5/8 brad point drill bit and sank the holes into the come and stock

A word of caution here, the flat of the stock and comb need to be perfectly level to so that the risers don't diverge like a japanese young persons fingers on production of a camera.

I trial fitted the hardware and found myself not having parallel risers, also I really should have measured like 2e+3 times more before drilling, my holes on the comb and stock were not co-axial.

I had to turn the bases through 90 degrees and lose the left-to right adjustment to recover the project, once they were turned, I corrected for my drilling error by moving the risers closer to one another.

I then haphazardly applied epoxy to my lip, finger, brow furrow and stock

Once everything is installed you have to drill into the comb through the collars that slide over the risers and tap them for set screws.

I did this this morning and its surprisingly solid, If I weighed about 60lbs I could hang out of it!

heres some close up pictures of the butchery:


http://farm7.static.flickr.com/6102/6344486027_488f1a25f1_b.jpg (http://www.flickr.com/photos/25517057@N00/6344486027/)
left_comb_cropped (http://www.flickr.com/photos/25517057@N00/6344486027/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

http://farm7.static.flickr.com/6053/6345236456_8f5fa87a37_b.jpg (http://www.flickr.com/photos/25517057@N00/6345236456/)
rightside_comb_zoomed (http://www.flickr.com/photos/25517057@N00/6345236456/) by harmoniums (http://www.flickr.com/people/25517057@N00/), on Flickr

vincewarde
11-14-2011, 2:05 PM
Wow, that riser looks very good to me!

McNally M.
11-14-2011, 9:02 PM
I'd have to agree. That's no amateur's job I can testify.

CDFingers
11-15-2011, 4:35 AM
I wouldn't cut yourself down so much, if I were you. I think it's an interesting build. It's true that with military Mauser stocks you can't get a good cheek weld. At some point in the future you might decide to put a different finish on the stock. Then you'd take it apart and do some finish sanding where it's visible, and round the edges where the scope mount fits. This will blend it in. A satin finish or oil finish would be best, then. Let us know how it shoots.

CDFingers

Dutch3
11-15-2011, 5:25 AM
I think you did a fine job. If I had attempted something like that it would likely have ended up looking like the aftermath of a shark attack on a surfboard.

billybob_jcv
11-15-2011, 9:33 AM
In my book, any time the original piece of wood survives my hack job, that is a very successful project! My woodworking rule is:

1. Measure twice
2. Cut once
3. Go to Home Depot and buy more wood
4. Rinse and repeat