I have an RCBS press and dies in .375 flanged H&H, .500 NE and .30-06 all RCBS dies...I hope the Redding dies I have just bought in 6.5 X54 MS will fit ??? p.s. Curl, I am enroled on a reloading course in the UK on 6th June with the BASC as per Jabali or Brambles recommendation (sorry Guys can't remember which of you it was) so I can start reloading in the Mannlicher or the Dodd Hughes Hagn, whichever turns up first,though possibly it might be better to start with the .44 Mag in the Marlin, what powder in the .44 for 240-270 grain bullets ? best, Mike