I have a 45 ACP that I enjoy shooting. I like it so much that I bought a mold to cast boolits for it. The mold is a H&G 68 clone and casts a .453 boolit. I coat and size the boolit to .452 and I slugged the barrel at .4515.
After the depriming operation, the O.D. of the brass at the mouth measures .464. The brass seems to be 0.010 thick so I am lead to conclude the I.D. at the mouth is .444. The information I have says to flair the top of the brass enough to accept the bullet. The top of the brass gets flaired and a .452 boolit gets inserted into a .444 opening. I measured the expansion rod/insert from the die and it measured .450. Do I need to do something different in the expanding operation ?
What am I missing? I seem to have gone through enough to ensure I had the correct fitting boolit until I insert the boolit into the brass.
Thanks in advance for your help.