Cz 550 .375 bolt face caliber options

k128

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I just won an auction for a cz550 safari classics complete magnum receiver with a 375 h&h bolt face. I've never had a rifle built before, but I know the easiest (read cheapest) thing to do is a bell and carlson, and have the action fitted with a caliber thats h&h based. I've already got a 375 h&h and a 416 rigby. I want to go as large as possible and i think the 458 lott is essentially the largest for the bolt face if I'm not mistaken? I'd love to go .500j or 505 gibbs, but does the bolt face/extractor have enough meat to machine to the case head specs?
 

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bigrich wrote on Bob Nelson 35Whelen's profile.
thanks for your reply bob , is it feasible to build a 444 on a P14/M17 , or is the no4 enfield easier to build? i know where i can buy a lothar walther barrel in 44, 1-38 twist , but i think with a barrel crown of .650" the profile is too light .
Duke1966 wrote on Flanders357's profile.
ok $120 plus shipping
teklanika_ray wrote on MShort's profile.
I have quite a bit of 458 win mag brass, most of it new. How much are you looking for?

Ray H
bigrich wrote on Bob Nelson 35Whelen's profile.
hey bob , new on here. i specifically joined to enquire about a 444 you built on a Enfield 4-1 you built . who did the barrel and what was the twist and profile specs ? look foward to your reply . cheers
 
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