BSA is absolute garbage. Buckmaster is okay, but a Weaver Classic is better in every way. Glass, light transmission, tracking. There is absolutely no scope in the same price range as the Weraver Classics or T-series that will track as well. I consider this a fact more than an opinion..
When you buy a Leupold, you have a scope with great glass, tougher than almost anything, with warranty/customer service that is unsurpassed in the industry to this day......