Both of you make valid points. And I accept them as fact. But for my needs I don't plan on shooting past 600 (maybe a tad farther) and I believe my Mueller works just fine for that. My hunting rifles I'm more than happy with the optics I've installed. I've taken mulies and pronghorn out to over 400 yards with them, a couple arond the 300 yard range, but most of my shots have been inside 100 yards. But one thing I will never do is put a BSA, NCstar or Simmons on anything I own. IMO these brands are real POS.