The more I get into LR and just shooting in general the more anal I have become. I'm constantly looking to shave 1/16 here or there to try an tighten up the groups. I have used Winchester brass, but now when I really inspect the new cases the greatest descrepency I notice is in the flash hole's. I have attached a picture. I don't know if it's obvious, but there are little "gashes" that don't make the hole uniform and I'm starting to wonder if they effect accuracy. I assume a difference in diameter gives a different burn rate. Though it may be marginal, beyond 500yds I would imagine the difference to be substancial. And I am the guy where a little means a lot. What do you guys think? Does Lapua make a difference in consistency, seriously? Can you achieve more reloads out of Lapua? Out of the 100 cases I purchased 30 have these minor non-uniform flash hole's.