Thanks for the specs Larry- I did notice even with the small rifle primers that after a dozen or so shots the residue was building up, so the wiping out is a definite needed practice.
Thanks everyone for the input. If you want to chat about it via PM please pm me, I may not keep checking back too much now that I have the info I need for .223 case modification. The hornet brass will probably be left unmodified, or I may just try a few flash hole expansions to see if it improves the speed. But .223 brass is way cheaper to experiment with than hornet.... Take care, thejanitor