Is anyone out there playing with a 375-06 Imp ?
Mine is one of several rifles from my late Brother's estate, probably his last build before he left us.
Stock and metalwork are finished but it needs bluing and it came with a set of custom C-H dies.
The chambering and dies are stamped 375-06 IMP - CP the last letters being his initials so presumably the reamer was his own design as the fired cases seem to be shorter than '06 length and slightly more blown out than other improved cases.
Now I'm looking for starting load info, managed to find some in the Big Bore Rifles & Ctgs.book but would like to find more.

Any help will be most appreciated..