I've been using Berry's and Precisiondelta exclusively for 9, 40, and 45. Just got myself a set of 38/357 die for the Dillon550, since I plan to put a good amount of ammo through a newly acquired Colt Python. Probably more 38 specials than 357's. Who's a good supplier for jacketed/semi-jacketed/plated bullets in this caliber? Neither places I usually use have a lot of choices. I am pretty sure I can use the same bullets for both calibers, and the differences are the powder charge, OAL, and crimp. I use Hodgon's reloading data website as a starting point, and probably will use the crimp measurements from a couple of factory loads as reference as well. Is there anything else I should consider? Your comments will be greatly appreciated.