I’ve run a bit of the red now, and I really like it. A heater is definitely required but I wish I could back mine down just a bit. I just unplug when it gets too soft and plug back in when it gets stiff.
Pretty nice stuff to work with. It isn’t super hard and is still a bit tacky when fully cooled, but not so much as to be messy.
Some smoke but not bad indoors. Got good accuracy and minimal leading in the 460 and 45acp stuff I’ve shot so far.