I have two. One is an as new Walther Model B Mauser I bought when I was living in Canada. I have yet to shoot it. It is the one on the right next to its 7x57 brother.

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Last year I picked up this little Erfurt Mauser and have been shooting it with the 185 gr Remington bullet mildly loaded to 2400 fps due to its small ring/large thread design. It shoots very well and is just begging to be taken hog hunting.

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Note that Hodgdon's indicates 180's at ~2700 fps at less than 50 kCUP with their CFE 223 powder. It looks to be a very good fit for the 8x57. Something I'll have to try.