Been reading about uniforming flash holes. Checking my brass , the older brass has an .080 hole, but the new brass hole is only .076. Do flash holes erode? In the interest of consistency, should I open the new brass to .080? That old brass is shot out, and the necks are splitting-could that be why the hole is bigger? It is Weatherby headstamped brass, which I believe is made by Norma, so it's good brass. Or was.