Re: Need to match dies and shellholders from same mfr
Mix-n-match away. I use Forster Ultra Seaters, Redding Type 'S' F/L dies, and depending on the press, Forster shell jaws, Redding competition shell holders, RCBS shell holders, Dillon 550 shell plate...
Just don't mix and match once you get everything set up and dialed in i.e. don't set up with one shell holder and switch to another brand without checking the finished product *carefully*.