Stevens 340 Conversion

[PDRK]

Hey, I've been thinking about a project for a little while now and would like some input from you experts on it.
I have a complete Stevens 340 in 30-30 that is in rough external shape. I was thinking about converting it to 7.62x25.
The process I was thinking about converting it would be snapping a 222 extractor/ejector on the bolt and affixing one of the cartridge conversions in the chamber. I thought that there were the 30-30s to 7.62x25 but now I can't find a mention of them online. Would it make sense to get a 303 conversion or a 7.62x54r one and turn them down to a 30-30 size?
After getting the firearm to chamber and fire properly I would then make/3D print a sleeve that would hold and feed a tokarev mag.

Any thoughts/input would be much appreciated.

Cheers

 

[tiriaq]

The .222 and .30-30 bolts are quite different, as are the ejectors.

 

[PDRK]

Ah, different in dimensions or different assembly? I have seen some extractor/ejectors that are a snap on collar for the 30-30 and 222 and maybe later models of 222 that are a couple separate parts almost like an AR bolt.

 

[tiriaq]

All the .222s I've seen have a little spring driven extractor mounted sideways in the counterbored bolt face, with a plunger ejector, while .30-30s and .22Hornets have flat bolt faces with clip on extractors and pivoting ejectors mounted in the receivers.

 

[PDRK]

Right on, I have seen similar stuff on the other guns. Does this part: https://www.gunpartscorp.com/products/327810A and the picture that goes with it make sense or is it mislabeled on the site? I am having a hard time visualizing how it would hold a 222 cartridge

 

[tiriaq]

I have not seen a .222 with that pattern of extractor.

 

[PDRK]

Right on, might make sense to take a 222 gun and put a new barrel for 7.62x25 on it