[1963duce100]

I hace an Investment cast 1903 that was rebarreled with a 1940's Remmington 30-06 barrel. I wanted to rebarrel it to a 220swift, Would this hold up to the pressure of the swift? I allready have a 700 that shoots sub 1"groups so I do not need another 30-06 so why not go varmit???

 

[Vintovki]

Who made the action?

 

[rebel727]

H.P White labs tested the Investment cast receivers around 1961 for safety and they were pronounced to be safe with 30-06 ammo. I wouldn't want to try anything with more pressure than a factory 06 in a cast reciever.
It's not worth the risk.

 

[1963duce100]

National Ordanance is stamped into the action

 

[Vintovki]

Take a look at these two links, according to Hodgdon the Swift is only slightly hotter pressure-wise than the '06.
http://www.hodgdon.com/data/rifle/30-06.htm
http://www.hodgdon.com/data/rifle/220swift.htm

 

[rebel727]

Is the gun still in it's original military configuration. If so I'd leave it alone. Wouldn't want to convert a cast reciever to anything remotely more powerful than a factory 06. Not sure I'd want to use it at all.