Machining M-305 scope Mount

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Super GunNutz
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Hello all

I am going to attempt to make my own mount for my M-305, as I have the time and the equipment.
There are a lot of different types available, and they have a lot of different features.
What I am looking for is opinions on which styles work the best, which features you like the best.
Also I would appreciate input from anyone who has tried this, I am sure that somebody has ( pictures would be great)
Thanks.
 
billybob...I am taking off my hat infront of you :)
these pictures are showing that you have hands growing from the right place and the head that is full of GREAT IDEAS
regards
Kot
 
Simple and elegant. Did you thread your own bolt too? This design looks like it would be simple to add on other attachment points easily as well. You've put more thoughts in my mind for future projects. Thanks for sharing.
 
Machining Mount update

Nice Job Billybob, when something works for you don't knock it.
OK here is where I am with my project.

First I cut a piece of steel 2" X 3" , 5" long.(didn't have to be this big but this is a piece I already had)
Then I removed some material and milled the horizontal key in the side as shown below.
The horizontal groove in my norinco was slighly narrower than USGI Specs., about 0.004", so I milled it to fit my reciever.


M-14ScopeMountPictures001.jpg


Then I roughed out the side of the mount so that it would fit on the side of the reciever. Cuts will be milled and beveled once I decide on the final shape of the mount. I then milled of the excess at top of the mount, approximately because I still have to determine the final height.


M-14ScopeMountPictures004.jpg



M-14ScopeMountPictures006.jpg



M-14ScopeMountPictures007.jpg


The mount is shown just contacting the dovetail where the stripper clip guide used to be. It will actually move back a little more and will be milled at an angle to match the insert that I will be making to fit the dovetail. the mount will be attached to this insert with a screw.


M-14ScopeMountPictures008.jpg


At the front of this mount there will be a screw which will support the mount.

This is as far as I will get for a while as I am going out of town for Easter, but I hope to get back at it next week. Will ad pictures as I progress if anybody is interested
Next on the list.

1. Determine the overall height installed ( I plan on having a groove in the center of the mount so that I can use the open sights, if I have enough "meat" left)
2. Dettermine the bore centerline and mill the mount rails, I am planning Picatinny rails( strange dimensions for slots)
3. Remove excess material where possible.( I will be milling the bottom of the mount at an angle to help with easy ejecting of spent casings)
4. Parkerise the mount to match the M-305 Receiver ( may need some advice with that one)

I am sort of winging it as I go along and am open to any suggestions that anybody might think would improve my overall plans.


Thanks will keep updating.

PS. Sorry for the size of the pictures, I will try and make them smaller next time if I can figure out how.
 
Update machining Mount

Here is some further progress in my attempt to make a mount for my M-305.

Please excuse the burrs and sharp edges they will be removed later.
scopemount001.jpg


scopemount002.jpg


scopemount003.jpg


scopemount004.jpg


Below is picture of mount with 3-9 Tasco scope mounted temporarily just to see how everything fits. The rings are obviously to high for this mount. When I get my Leupold Clone, it will sit here on a pair of custom rings which I have yet to make. I am waiting until I get the scope so that I can make the rings as low as possible and still be able to use the open sights.
scopemount005.jpg


I still have to install screws in the front(for support) and back of the mount( to attach it to the dovetail adapter)
I will be milling a slot through the center of the mount to allow use of the iron sights( if space permits)
I will also be milling the underside of the base above the chamber at an angle to allow more room for ejecting brass.
There is still a lot of "Extra" metal at the back and top of the mount that I will be removing when I determine the best "lines". I am still winging it, but I am happy with what I have so far.
I already have plans for changes in mount #2

PS. One of the picatinny slots is not in the right location, can you guess which one it is?
 
Atta Boy!!!!!

That is indeed a very nice looking mount for your first attempt.:cool:



Maybe you should look at coming up with a forward scout mount similar to the Springfield scout mount but in steel........;)


SKBY.
 
Nice work.It always seems more satisfying to make something , by taking measurements and building to fit, than simply following a print.
It would however seem fitting to reverse engineer a mount from an existing one , considering the M305s history.

Scott
 
Mount Finished

Hi guys
Thanks for the positive feedback, I really appreciate it.
I finally finished the mount and here are some pics.
All the machining for this mount was done by a conventional Knee type milling machine, not CNC as I don't have access to one.
Sorry about the glare, I just finished buffing it.

finishedmount001.jpg


finishedmount002.jpg


finishedmount003.jpg


finishedmount004.jpg


finishedmount005.jpg


finishedmount006.jpg


finishedmount007.jpg


The mount has a groove milled through the center to allow use of iron sights below scope mount.
The bottom of base above the chamber is milled at 15 Degrees, this should be enough as I have seen lower mounts on the web that were milled at 5 Degrees.
In retrospect I could have gotten away with a mount that was a little lower, there isn't anywhere on this mount that is less than 3/8" in thickness. This might be over kill but I wanted a mount that would not flex.
Overall I am happy with the way the mount turned out.
I will post a range report as soon as I get a chance to try it.
I would appreciate input from anybody, positive or negative.
Originally I had planned on this being a onetime deal but I think I will try another in the near future.
Thanks again for the replies.

Now I would like some info on how to parkerize this mount to match the M305 finish, anybody?

PS. Skullboy,I had not thought of a forward scout mount as I personally have no need for one, I did cruise the springfield site but( couple of minutes)I did not find a picture of the scout mount, maybe if someone was to post a pic of one, off the rifle and the location where it mounts I might try one, the rail itself is not that difficult, and you can mill a 6" rail with no more difficulty than a 2" rail.
 
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