I've not purchases a scope in over 15yrs, but am needing to purchase one for a new rifle.

I see many companies have come out with caliber specific scopes. I haven't gone to a local store to hold and view one, but the pics on the web show that the turrents have yardages on them. That being the case, how do these companies offset the PR nightmare of 2 drastically different loads.

Ex...I purchase a .223 specific scope. The manufacturer may have "doped" the scope for a hot load and may only drop a few inches at 300yrds. I, on the other hand, would like to shoot a heavier, slower round that may drop over 12" at 300yrds.

WHAT INFO AM I MISSING WITH THESE SCOPES?