RE: Leupold Scope concerns
The gripe is that they are short enough (not all of them) that in order to mount them to fit a variety of sizes of people you must use either extension rings or reverse front or rear bases that extend over the ejection portof the rifleto give the shooter proper eye relief. Remember that not every one is built the same nor do they shoot the gun the same.
Leupold isn't the only offender of this though. IMO there are a lot of scopes that are too short.