Has anyone done it?

My gripe is wether to make the magazine single stack or to alter and try for (semi)double stack.

Bolt and extractor is done and a barrel is in the mail.

One difference between the M1917 and the P-14 is the magazine box and follower. The P-14 mag box and follower are designed for the rimmed .303 British round. The M1917 box and follower are designed for the rimless 30-06. Haven't done one myself, but have seen a couple 17s that were converted using the P-14 parts.

I have a 14 mag and follower to google but they are made for tapered cases. The 17 mag and and follower is way better suited for 45-70's but the follower needs work.

Ok then i'll open the feed rails tomorrow and work on the 17 follower.

I'll pop a few pics tomorrow.

Extraction is going to be the most interesting ordeal.

The bolt was easy:






I opened up the feed rails and then

I think the mag is to narrow for the rims to stack/lock properly to stay put. Had i just kept the last 15-20mm then a single stack would have been easy peasy. Whell live and learn

I have one been using about 8 years or so double stack turn the standard magazine inside out. feeds functions great have done 3 or 4 for other people over the years everyone loves them.

quote:

Originally posted by CRUSHER:
I have one been using about 8 years or so double stack turn the standard magazine inside out. feeds functions great have done 3 or 4 for other people over the years everyone loves them.

Pics, pretty please? With a cherry on top!
A better describtion about the mag work would be appresiated also

the 14 mag from some service rifles is riveted together . cut it apart and reverse the sides making it effectivly wider ie turn it inside out. the slope running foreward on the back of magazine so the rims will stack in order to feed.

will have to wait for pictures rifle not at work with me

the 14 mag is sloped bottom back from top foreward so the rims stack on top of each other each round slightly in front of the one below it. so the 17 box does not work well. a slightly opened and back tapered follower works well again the 14 one is easy to convert.

Dane, a photo like this got me classified psychologically unfit forty years ago at my local draft board.



That aside, is that a 17 or 14 bolt you modified?

Thanks.

look at the extractor its 17 not sure about the bolt

It is indeed a m17 because is was what i was given. You cant beat a freebee

CRUSHER i see what you meen and tomorrow i'll widen the 17 mag at the back and then widen the reciever thus taking care of the rims. As for slope on the front and back i'll take that into account when i "shorten" the mag and fabricate a new follower.

I'm glad that you prowed me wrong when i thought i had made the action into a "fine" bottle opener.

Updates to come.

Is it to late to tell you to built a 458 lott? Post more photo's of your work on this project when you can.

@ J_Zola , it's gonna be a silent sub sound, brick thrower
405-500gr at below 1100fps, the beast newer knew what hit it

I have just had a crash study of magacine design i think!!!!!!!!!!!!
When i analyse the actual M17 mag the stack is set at a @60deg stacking angle. Is that cosher for a self locking stack??? If so then i have plenty of material in the reciever to widen it and the mag will have a wedge in the rear.

Comparison of 45deg and 60deg stacking, as of now the mag is @45deg with 45-70 and pretty much self emtying when the bolt is retracted. But with 30-06 it's more like 60deg stacking and that seems to be cosher for keeping the rounds "locked".

good work on the math im not sure this will translate but I will try .

you have two cylinders held in place by two paralell planes the right left ctg held in by the rails. if the correct angle to hold the ctg in place is 60 deg then you have two different measurements on your ctg the diameter of the rim and the diameter of the case body so the rails must be 60 deg for rim dia at the back opening enough to let the rim out and under the claw at the point where the bullet enters the chamber but then closer twoard the front to help hold the ctg in and force the bullet into the chamber at the front.
it will feed and works just not as well as a non flanged case.

you can cut off a belted mag at 2 inches and seat the bullet out for an 06 leingth package to use with a supressor. 458x2 barnes. see ctgs of the world.

clear as mud now im even confused
effectively you need a bulge in the opening a little foreward of center.

450 Marlin?

But you see guys: It was a gift!
A 1917 reciever complete, a stock and all the 45-70 virgin brass i want (sort of but at least 200 pcs.).

So the stage was set and i knew that mausers have been done and that Lee Enfields have been done. From there to here the road was laid.

Updates after 3 hrs in the shop.
The reciever has been videned @4.4mm at the back with a 1/4" ball endmill.
The mag has a temp wedge to hold the width.
And the bottom metal has been widened to fit the mag.

It will now hold 3 rounds perfectly
Work on the feeding is needed as is a new follower, but basically it works.
So i have treated myself to an icecold beer

Right side of the reciever widened by 2.2mm


Finished


Here with the mag


The bottom metal after milling


Finished and assembled


Heres the proof

very nice work.

I got into 45-70 the same way free barrel

A small update:

I have lengthened the millings in the reciever so the rounds flow smoothly.


The front of a 1867 model Danish Remington Rolling Block barrel in good shape and a rough adapter. (It's .45" cal and free )


Tomorrow the barrel will be tinned into the adapter and then fittet to the reciever.

Had the same done back in 1980 at PA gunschool Guess what the man who did the job took to much metal from action and the 45/70 rounds fly out like a jack in a box ! Supervision was needed ! possibly not asked for ?

Another small update.

The barrel is tinned into the adapter and it has been trued and the square thread is cut.

I have put 2 flats on the barrel and the slap of alu is going to become an action "wrench".

So an action "wrench" has seen light of day, and it works perfectly







Installing the/a barrel is a job that takes seconds



Next is milling the space for the extractor and chambering the barrel.

Oh and here is a pic of the rawmaterials for the muffler





2x16" carbon steel threaded for endcaps and endcaps in both steel and alu (anodized). Who can turn down a freebee?