MP Molds 62gr NATO for 223. COWW / Range Scrap mix (3 Sb, .5 Sn per NITON, As not measured). Eastwood Ford Blue powder, 3 thermocouples inserted in drilled out version of same bullet in small non-conv. toaster oven.. 20-30 minutes at 460 PID setting (all tc's within 450-470).. PC coats fine, bullets harden within 24 hours approaching linotype levels (I use a "vise squeeze" and Shore D durometer method to measure hardness). Biggest issue is using only back half of oven due to hot/cold spots inherent in little radiant heat ovens like this)..