40 necked mosin

[brybenn]

Could the 7.62x54r of the mosin negant be necked to take a .405 diameter bullet? Would re boring leave enough barrel thickness or would a new barrel be needed?

 

[mbogo3]

There is a 9.3x54R/53R in existence..........Harold

 

[Eaglelord17]

The normal Mosin Nagant barrels seem a bit thin for reboring to a round that size. Not saying it couldn't be done, just that they aren't a very thick barrel to begin with (would definitely have to do some measurements).

 

[mbogo3]

A new barrel would likely be cheaper than a re-bore.Perhaps a take off barrel re-chambered? Harold

 

[brybenn]

Good to know.

 

[brybenn]

Any thoughts on twist rate for a 230-300 gr bullet?

 

[kawicrash]

Just get one of the 9.3x57 Mauser or Husky rifles from TradeEx. Waaay nicer gun, and cheaper than the cost of just a barrel.

 

[brybenn]

A 40-57 wouldn't leave much of a shoulder for head space?

 

[Andy]

Are we still discussing a 7.62X54 wildcat? It headspaces on the rim.

 

[brybenn]

Yes I know. It was mentioned to use a 9.3x57 Mauser instead of a mosin to get a better rifle. Which I agree is true but I wasn't sure that necking the 57 case to fit a 40 cal bullet would leave enough shoulder. That's why I thought of using the mosin. That way if it didn't work out I'm only out the price of a barrel really. Mosins can still be found pretty cheap

 

[cody c]

Wasn't there a 45-70 myosin on the internets somewheres, obviously involved a rebarrel, but perhaps there is candidates, I found a 45-70 barrel off a lever action looked brand new for $100, but it's likely too small diameter to thread to the mosin

 

[brybenn]

I saw one of those online but the reciever was heavily modified