I've used the Leupold 2.5x on and off for a few years. I'll always have one just for the heavy kickers as they're a tough scope. I discovered its limitations twice ... once 'searching' in fog and low light to find an animal I knew was there. I still feel greater magnification would have allowed me to see 'through' the fog. Other limitation was a fallow deer taken at 150yards ... shot was easy enough but exact placement was difficult (again early morning light) due to the low magnification.

My 470Capstick now wears a x4 Leupold and my 358Win a X6 Leupold. Even in thick scrub, the 4x I find more versatile than the 2.5x. A 2-7x on my 350RemMag never moves off 4x unless on the range.
Cheers...
Con