Possible Swedish mauser barrels

[Remiel]

I have a pair of new military stepped barrels that were sold to me as 8x57 small ring mauser, apparently they are neither 8x57 or small ring, and have a crown stamp on them, bore swallow a 7mm projectile and a 30-06 cartridge fits the chamber, any ideas? Bore was .305-.306 in the groves with my cheap calipers.https://uploads.tapatalk-cdn.com/20220528/172b7d8119b529c72c06f8cb9d624252.jpghttps://uploads.tapatalk-cdn.com/20220528/95e220d34c2e350d01ce09fc410dabec.jpghttps://uploads.tapatalk-cdn.com/20220528/e195c5fd80fbeb35458029ccf1eb1efa.jpghttps://uploads.tapatalk-cdn.com/20220528/eb7b487261392f73f433aebb70234799.jpghttps://uploads.tapatalk-cdn.com/20220528/24e5858bc2409b5f09568e332242b54b.jpghttps://uploads.tapatalk-cdn.com/20220528/9ddf534968d9b64b18f1530c993e27fa.jpghttps://uploads.tapatalk-cdn.com/20220528/d8e08e1a26d28f91abf6ffdaca16ee07.jpg

Sent from my SM-G970U using Tapatalk

[Mk42gunner]

Didn't Sweden have a few large ring Mauser's chambered for a 8x63mm (or so, going from memory here) round to match their machine guns?

No idea as to cartridge shape. I would do a chamber cast before I did anything else with those barrels.

Robert

[Rapidrob]

Birthday candle wax works well and cheap to do. The slight shrinkage of the wax will not give you false results.

[john.k]

Could be Swedish,they have the Carl Gustav crown mark.......and Swedes rebarreld K98s as 30-06 for shooting competition...........so assuming they are Carl Gustav,they are made to convert German captured Mausers to 30 -06.(large ring 1.1" x12 tpi thread.

[Remiel]

Birthday candle wax works well and cheap to do. The slight shrinkage of the wax will not give you false results.I will give that a try

Sent from my SM-G970U using Tapatalk