I'm wanting to load up some 147 grain Berry's round nose bullets with accurate #7. My Lee manual (and other sources) show a load range from 5.7 to 6.6 with a minimum oal of 1.160". I loaded up a few rounds from 5.8 to 6.5 to test out. All passed the plunk test in my m&p shield but they seem to stick in my cmmg PCC and don't drop out freely. Can i safely reduce the oal on rounds that are on the softer side of the range or should I consider going to a powder that has a lower minimum oal?