I'm new to this aspect of reloading, am working on forming 22-250 Rem (once fired in standard 22-250) to Ackley Improved. Today I ran through 40 rounds, 4 x 5 each of two different powders loaded in 22-250 R-P cases, CCI 200 primers. Out of the 40, eight did not fire. When I got home I pulled...