BSA scopes--in a word- JUNK!! A 3-9x40 on a 223 turned into junk in a matter of a couple hundred rounds. A Lighted-Reticle model(my son's) turned the crosshairs at a 45 degree angle, that'll ruin your day!!!! No longer crosshairs, but now X-hairs.
I have a Tasco 3-9x32 that has been on my Rem 700 .30-06 since 1982, and I have had only 1 small problem with it, the rear external lens loosened up, so I sent it back in for repair. Other than that, it does a great job.
A Tasco scope is not a Cadillac, but for the money, I think they are the best low-end scope you can get. If you're looking for a good scope at a reasonable price, check out the new Redfield line. I have a 4-16x44 AO Tracker that I am very impressed with. The price last year was about $230 plus tax, so it came home with me.