Can an old Oberndorf large ring small thread mauser be converted to a threadless takedown system? I think I've seen pictures of Johannsen 98 rifles with the threadless takedown system? Just curious.
Matt

Yes , you can.
http://www.patentstorm.us/assi...d_ORTH/632964/1.html

Looks like it costs ten bucks to look at it.

Nah...

they just want you to buy a "searchable" PDF for $10.

http://www.google.com/patents/US20050188584

Try this (no money needed)
http://www.freepatentsonline.com/EP1398594B1.html

Ah, that worked; thanks.

Thanks! I was just curious. The text of the patent describes the system as simple and affordable, but like most things in the world of custom rifles, it would cost a good chunk of change.

Westley Richards built up some takedown Mausers with a lugged barrel shank just as they did with their falling block rifles.

What is a sauer 202 with locking lugs in the barrel not a mauser. Make a bedding block in the mausers stock and take the whole action out like the old take down mausers.

Another interesting way to make rifle to fit in shorter case is just make the stock two pieces. Then just release the butt stock and let the fore stock piece to stay in it´s place.

It would be easy to do, but it might be damn hard to make one shoot or be consistant is my opinnion, so I've never tried it..

I only have one takedown, A Brno custom switch barrel in 9.3x62 and 7x57, I have to remove the stock and screw the barrels in and out with a small action wrench to their loacation mark on the receiver then put the stock back on. I can do with with whatever is handy like a vise or even a padded pipe wrench, maybe a pair of channel locks, who knows?. If one omitted the rear iron sights I could screw the barrels off and on by hand, but I like irons..

However, since owning the gun, I believe I was delusional in that I never have the correct barrel on it when needed! Neat idea but not very practical. Maybe I should make another rifle with that other barrel? I would if I could find another mod. 21 or 22 action..
But I have another problem with that and that is this rifle shoots both barrels to the same POI without changing the iron or scope sight. That will never happen again, its akin to the second coming!

I don't think I would ever get a switch barrel T/d rig.

I like T/Ds for their compact travel with one barrel.,..which obviously would be the correct chambering
if that was the rifle I decided to carry, to do the job.

On the Johansson 98 take-down system that I saw, IIRC...All of the threads and the locking lug area were bored out, smooth. The back of the barrel was also smooth and slipped into the action from the front.
Can't remember how it was locked in place. The interesting part is that the bolt locked into lugs that were in the back of the barrel. I think Blaser uses the same system.

The Joahnnsen Mauser use a system developed by German gunsmith Orth which is the same as the Sauer 202 take down.

The secret in the inherent precision / accuracy of the SAUER system lies with the fact that the bolting is done directly to the breach end of the barrel and not the front ring of the action.

Sauer coined the term "auto headspacing" for this. This imo defines the modern bolt action from the traditional. The action itself is merely a raceway for the bolt, it needs not be robust at all for it bears no apparent load when the gun is fired.

In the case of the Sauer the scope is mounted on the action thus some inherent measure of sturdiness is required. In the case of the Gehmann design and subsequent Blaser the scope mounts directly on the barrel further increasing accuracy / precision of the system.

It seems to be practical only in countries that limit the number of rifle frames you can own, but not barrels. Here in the US, where we are not thusly limited, it is usually a bad idea. Novel, unique, but not practical. TC Encores might be an exception.

Shhhhhhhsh ! Obama might hear you and realize the only the lowers on ARs are serialized and uppers can be bought mail order !

Ray, who's the gentleman up in Whitebird, ID, that makes TD's using CZ actions. Like $1500 on your complete rifle.

Rich

This thread is very interesting but would be much better with photos.