Yeah, it's in focus at 20 yards--and so what if it isn't?
I've also shot a running wild boar at 10 yards with a 6x scope. The image wasn't perfectly focused, but I could tell the scope was pointed at the shoulders, and when the fuzzy reticle was in the right place, pulled the trigger. The bullet broke both shoulders, the pig's snout hit the dirt, and he flipped over, lying dead pointed in the opposite direction.
A scope's FOV " reduced to nothing during a charge"? Interesting. I haven't heard that from Phil Shoemaker. Maybe he'll comment here, but suspect he's still busy guiding hunters.
