I have reloaded a bunch of the nickel plated UMC brass, so yes you're good to go. I did try to size some 10mm UMC brass into 9x25 Dillon, but 3 out of 5 cases split at the neck when I belled them. They seem to be more brittle than the Starline brass I have, but all my UMC nickel cases have been reloaded 3 times with 180gr FMJ/9.2gr Longshot and still look great.
GEN 3 20LS/20SF/21SF/30SF/23/34/26
GEN 4 17/19/21/34/35
Last edited by Meathead9; 02-01-2011 at 16:18..