I'm going to start with the 6" by cutting it back to 4 3/4" for packability and get a load worked up for the 7 1/2" that doesn't have fully adjustable sights with a red dot for longer range with the 300 aframe. I would like to shoot a 250-275 gr in the short gun at 1200fps. For those of you who cast your own bullets, what is your favorite mold?