Yup, hitting the upper and lower erector stops a few times between shots makes for a good test of the scope's tracking integrity.
Regarding the variable vs. fixed- I'll take what I can get. But if I'm rolling a variable with a marked reticle of some sort, it's gonna be FFP.
23 MIL useable is a lot of friggin "up", but 13.3 will get me to 1430 meters at my locale, sans reticle. Another 5 MIL in the reticle will go beyond a mile. Plenty far for 9x glass on a Montana. If I had 23 MIL it'd take me to 1860 meters, and another 10 would get to 2175m. That's 2378 yards, which is a bloody long ways off
