Recently got this off ebay,relativly cheap.It ia a lyman 311413 hp.The previous owner had the pin permanantly stuck in the mold with some kind of braze or small weld.I had to kinda "break" it off to remove it,leaving a small chip missing from around the hole where the pin goes in,wont hurt anything.Then I found that a 1/8" drill bit fits perfect in the pin cavity.My question is how deep should I make the hp cavity?I havnt cut down the pin yet,there is plenty to work with.And should I leave end of pin flat or round it off,or would it matter?This is my first HP mold and is just something to experiment with,wont be making any hunting bullets none too soon.Appreiciate any help with this.