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Big Ruger 77? O.K. for Chey-Tac?
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Ruger makes the bigger M77 for the .416 Rigby. Would this action work for the .408 Chey-Tac? The .408 case is the same dia. as the .505 Gibbs but operates at higher pressures.
Thanks for opinions.
 
Posts: 275 | Location: NW USA | Registered: 27 May 2001Reply With Quote
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Yes.

Hamilton Bowen builds the .505 Gibbs on them exclusively.

The OAL of Warrens loaded ammo may be too long with the 419gr bullet. The 305gr bullet may be a little bit shorter loaded, but then again they both may work fine.

I have one a Ruger rechambered to 416Wby and it feeds perfectly with no mods and holds 3 under the bolt too.

The .408 has been under consideration for use on my action too, but mine will be single feed only for long range shooting.
 
Posts: 913 | Location: Palmer, Alaska | Registered: 15 June 2002Reply With Quote
<John Lewis>
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I would be a little concerned using that big of a case that is loaded to the high pressures that the Chey-Tac is with a 1" thread shank. It might not make any difference, but better safe than sorry.
 
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<KBGuns>
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Like John says, it would be pushing it IMO. The 408 Chey-Tac runs at 70,000 max psi. That pressure with the large diameter case seem to be asking for trouble. For the 505 Gibbs max pressure is only 45,000psi. Quit a big difference to compair.

Kristofer
 
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Ditto on the M77. I'd be concerned with using this action on a 70K PSI cartridge. The best choice would be a Mcmillan .50 BMG action with a .640 boltface. They will make such bolts on order. A Vektor will also work if you can find one. I think Prarie gunworks also has an action that they state will work with the Chey-Tac. If it were me ,I'd go with a .50 Mcmillan.-Rob
 
Posts: 6314 | Location: Las Vegas,NV | Registered: 10 January 2001Reply With Quote
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