I sent CH4D 3 fired cases for a .375 wildcat and they sent me a set of dies too small to be of use.

I sent the dies back with 3 more fired cases, explaining their error - they returned the dies unaltered. Both times they kept the formed cases, thus all 6.

I then purchased a set of .376 Styer dies from Hornady and use them for neck sizing and seating - problem solved. I use an expander button I made for necking the cases straight to start with - single pass on .0/06 or .35 Whelen brass, no need to neck up in in steps.