I just recently bought a used Mark 4 M3-10X scope without it's original box and papers. The scope being my first 30mm scope I had to order some rings for it to use on my Rem 700 VLS .243 Win. After receiving the rings in the mail I had a closer look at the scope and I was surprised to find the elevation knob had "1 2 3 4 5 YDS .223 REM/5.56mm" instead of the usual marks like on the windage knob. A bit of research online showed that it could be also used with a .308, 30-06 and .300 Win. using different BDC rings. I don't have any of the above rifles except a .308 and I'm not planning on using this scope with it. Can this Mark 4 scope be used like a regular scope with my .243 or would I need to shim a base in order to zero in the rifle?
TIA
TIA