I'm going to do some shooting this weekend, befor i load up some rounds i have a few questions for you guys . The brass i'm using now has several rounds on them i'm just guessing say anywere from 7 to 9 shots . Question #1 should i get some brand new brass before i go any further? Question #2 i have a neck sizing die i can use but i mainly full length size now, if you have low es and sd how do you size your brass ? Supplies are hard to find these days and money is to, so any short cuts will help. Thanks for reading.