Caps, Balls And Black Powder

I've been trying to become somewhat self sufficient with Black Powder loads. The .454 and .457 Diameter balls have been a success and I'll soon try the 50 caliber for the Hawken. I'm punching caps from double thickness soda can aluminum and using Prime-All compound. I think my problem with the caps is my aging eyesight, I can't see if I've put enough compound in the caps. My really coarse grind powder worked great in the Hawken and Dragoon. The 3F I made for the 1851 Navy may be closer to 4F. I need to get a different seive and sift out a coarser grind. I'm only using a 12 1/2T press for the corning process. Perhaps I need more pressure.