Another example of German lack of understanding what matters in precision, dare I say?
My friend (RFD) did have half a dozen Präzipress few years ago, they were very nice. But I have experience with e.g. Innomount Tikka T3 QD mount, where recoil lug is such surgical fit that it's a pain to mount the (NV) scope. And it doesn't match the contour of recoil lug cut in the receiver, so it's purely an annoyance to user (not that I suggest, matching the contour would make it OK to have too tight a fit).
I also have a hunch, that there's no standard for shellholder dimensions. If Turban specifies which shell holders are compatible, kudos to them. Contrary to earlier post, I have full set of Lee shell holders and use them with all my dies. Haven't got any problems that are not user related, and when those occur the case is definitely "wobbling on the end of die" then! But I do use proper holders, instead of e.g. mixing 6.5x55 and 9.3x62 brass with .473" (308) size holder that some people do (that is quite the opposite, some cases won't even fit the holder).