by Seismic Sam on Sat Dec 29, 2012 12:00 pm
Well, getting seperate toolheads is a prefectly good idea, for somebody starting out, getting your dies set perfectly and leaving them that way is a good idea.
HOWEVER, seeing as you will be loading 38 Special AND 357 Mag, you will be using the SAME dies for both calibers, so you need to be very careful about going from one to another without adjusting them.
1: The size die does NOT need to be adjusted! Just set it so it contacts the shellholder, and you're done forever. I hope you got the carbide size die!
2: If you use it, the expander die WILL have to be adjusted substantially between 38 and 357, and you'll know if you screwed up! Generally, you have to use the expander for cast bullets, and you may be able to NOT use it with jacketed bullets. Also, the expander stem on the Lee dies is the suckiest one of any brand out there, and you may want to chuck the stem in a drill and polish it down with silicon carbide sandpaper. DO NOT use aluminum oxide, as this will grind down the stem!!
3: Just due to the different length of the cases, you will have to reset your seating die for each caliber AND each bullet! The good news is that the Lee seating die makes this very easy, so provided you are NOT crimping the cases, this is quite simple. If you ARE crimping the cases (and for 357 you probably should be...) then you are going to have to unlock and reset the seating die each time you change calibers.
4. If, however, you are using the Lee Factory Crimp die as die #4 (and this is HIGHLY reccommended!!) then you can set the seating die with no crimp and just dial in the crimp on either caliber on the FCD with your fingers.
You're off to a good start, but remember to keep track of your 38 and 357 die dettings, and stay safe out there!!