I've seen British-assembled Mauser rifles in .303 and .375 2 1/2" (based on the .303 case, usually used with a Lee or Lee-Speed action, but some Gent just HAD to have a Mauser!).

Also saw one no-name post-WWI German-assembled '98 on a military action that had been made in 8x50R, perhaps for an Austrian or Hungarian client?

All had the slanted magazines.