I have never owned a BSA scope so I have no hands on experience. On the other hand my dealer has been selling BSA's for awhile and has sold quite afew of them.According to him he hasn't had any complaints and has been happy with their quality.If it were me wanting to get a new scope. I would save up and buy a quality scope and leave the cheaper ones alone.In optics the better scopes payoff.
Ruger Redhawk

..... A Proud NRA Life Member since 1977 .....Ruger Redhawk