I have a Turkish Mauser chambered 45-70. Because the magazine will not stack or feed that rimmed cartridge properly, I am going to rechamber it to 450 Marlin, a rimless belted cartridge. Someone long ago had cobbled the feed plate in the mag trying to get the 45-70 to feed without success. is their a source that can supply a magazine that would stack and feed the 450 Marlin?
I have no experience with magazines, and am kind of floundering around at this point. I would be grateful for any help.
Thanks, Rich Quigley

If the bolt face was opened to fit a .610 head of a 45-70 the rim of a 450 marlin is only .529. I would think that would be more of an issue than the magaine follower

I made a .450 Marlin on a m98 action about a year ago and as I recall it wasn't too difficult to make it feed. Sounds like you will need a new bolt and extractor to start. Bill

Ramrod, and Bill, I know you are right about the bolt and extractor. A lot easier to open up the face than to shrink it, and the extractor isn't going to fit on that rimless cartridge either. Any idea where these components are available from??
Rich Quigley

I would think a military bolt would be pretty easy to find. Then open it up and replace the handle if needed. I'm not sure which if any other M98 will swap out.

Several sources listed here.
http://www.mausercentral.com/gunparts.htm

Quigley Try and find a Siamese Mauser action and try to copy the magazine on it and make it fit your Turk. The Siamese Mauser was made to feed a rimmed case.The magazine slants rearward so the rim of each case in the magazine is ahead of the round below it. This would be a lot cheaper than trying to change to a 450.

Quigley, I responded a little to your inquiry on mauser central. I have bolts if you need one and are local to you give me a shout if you need one. I'm by metro airport.
Don

Wouldn't it be cheaper to just work on the gun as is (45/70) and get it to feed rather than go to the trouble with new bolt, extractor etc.....?

Quigley, I will trade you a non altered bolt for your altered bolt, even-up. I have been making, for myself, rifles in pistol calibers based upon the turkish mauser. In order to get these rifles to feed out where i can see it, I cut the bolt off just about where it exits the receiver ring. Then I turn an extension onto the barrel and the chamber is in a good place.