Need help with a BSA Mach II 17
Well at the gun show today I traded for a NEF sporster in .17 mach II. On it was a BSA 3-7-32AO Mach II 17 scope. I looked online and couldn't find a manual for it. On the BSA website they have the sweet 17 and it says it is calibrated for 17 hmr. I found the Mach II on another sight and the 2 scopes look I dentical except the Mach II says Mach II where the Sweet 17 is. My question to anyone that has one of the Mach II models or the sweet 17is how to use the scope. On the tower is says 17hmr/17 which I assume is 17 gr bullet. Was this a misprint on the Mach II models? The adjustable ring at the far end of the scope is calibrated from 12.5 to 200. Is this what I use once I get it sighted in to adjust for the yardage or do I use the elevation tower? Thanks for the help this is my first variable scope, I mostly shoot iron sights on my M1A or a fixed scope on my .30-06.
Jim