I am probably several generations of rifle out of step, but I have found short cartridges take some fussing to make work, in receivers designed for a longer cartridge. Mauser 98 in 8x57 seem to go fine - what they were made to do. Israeli conversions of those to 7.62 NATO - with the magazine blocked at front seem to function okay. But I have two Mauser 98 with 243 Win barrels that I can not get to work well - has to be something in the feeding / when the case shoulder or the skinny bullet goes up the feed ramp and / or when the magazine side rails let go of the cartridge. Both work fine with a Score High single shot follower installed, but I have not got them to be "slick" with either standard German, or modified Israeli magazine boxes. Yet there are several former 8x57 that now use 30-06 that seem to go fine - I have decided it has to be a "short cartridge in long action" thing - maybe the receiver feed rails, under the action, need tweaking ... I suspect if one started to design for that length and diameter of cartridge, one could get the feed angles correct - is more fussy to adopt a previously existing long action that uses smaller diameter body, to do so, I think.