try it

8x57IS Sellier&Belot case 57,40 mm long

sized in a 9x57 Mauser die 57,17mm long

sized in a 9x5x56 MS die 57,01mm long

sized in a 10,75x57 die ...

as you can imagine the case mouth end at least now lopsided
longest 56,35mm shortest 55,75
in a lot of 100 cases for example some will look better and some look worse

any case under 57,00mm is scrap

I talked once with Mister Triebel http://www.triebel-guntools.de/en/click-here-to-go-back-to-the-startpage/ about the 10,75x57 and he have the opion that this case needs a chamber like for an automatic pistol round so making the headspace with the case mouth. the "shoulder" of the 10,75x57 is more or less worthless.

9,3x57 factory brass will be for my Husqvarna

8x57IS basic

loaded round
7x64 basic

fire formed
30 06

waidmannsheil Rolf for your new rifle, do you know if it comes also from Schweden?
please pics and the serial number

for delsing bullets look here
http://forums.nitroexpress.com/showflat.php?Cat=0&Number=174859&an=0&page=5#Post174859
recommand them like the CH4D die set

if you like I can size you a box 300 grains sierra .429 bullets down to .424 for a first test. the good thing about this pistol bullets is the cylindrical part have the same lenght like the original 10,75 bullet

300 grains speer 50/24 euro
300 grains Sierra 50/15,50euro
350 grains Delsing 50/26 euro