Interesting "discovery"

I have a couple of Discovery scopes that I bought a couple of years ago. They've been collecting dust, but I'm setting up a backup Hunter class rig and I wanted to see how they do.
The scopes are both Discovery VT-R SFP 44mm obj scopes. One is 4-16x, one is 6-24x. I'm testing them both at 16x.

The focus wheel on the 6-24x goes a little past 180 degrees from 10 yards to 50 yards. The 4-16X goes a little less than 180 degrees. This doesn't really matter to me, but I know it matters to some people.

Here's where things get interesting. I assumed that the 6-24X would range better. I mean, it has more numbers and it cost more (I think, can't really remember). The 4-16x completely kicks the butt of the 6-24X for depth of field. It's extremely snappy and repeatable. The 6-24X isn't terrible, it's just not good for range finding (along with a bunch of other much nicer scopes I have).

Bear in mind, ranging was done from 10 to 20 yards. To go farther than that, I would have to go out into the sun. Not happening today. I put arrows with feather fletchings out at every yard and sat in the shade of my back porch. I checked the 50 yard ranging on my neighbor's brick window sill. This is all very scientific. I'll put a link to my Patreon page. But if the 6-24X struggles to range find at 10 and 11 yards, it's safe to assume it's not going to suddenly get good at 40+ yards.

I've always assumed that a higher mag scope would range better than a lower mag scope in an apples to apples comparison. And now I don't assume that. I didn't bother checking the 6-24X at 24X because I don't care. I'll never shoot it at 24X where I need to use it for range finding. I'll probably put it on an EFT rig and move forward with the 4-16X on my hunter class back up gun.
 
That's the first thing I do with any scope. I tune the ocular lens and tape it down.
I didn't struggle to focus on the crosshairs, the struggle was with the depth of field when range finding. To put it simply, if a target at 15 yards looks to be in focus for a few millimeters on the scope wheel, that's bad. You want a tiny window of focus for each yardage, not a big gaping barn door of focus.