I took a mover last yr, and was in a stand. So the tree blocked the deer's movement for a bit.
When he popped out, was on diff line than anticipated............and I had a 4X.
Brushy too. But my gun fit well, was a decent scope (old 4X Leupold compact) and I just brought it up and was on him.
Saw the slot to sneak a bullet through and as he hit it, popped him.
It wasn't a tough shot.
But it wasn't exactly easy either.
The 4X added a bit of anxiety. Used to shoot same type of scope on a slug gun way back, and always follow the deer w my eyes, bring the gun up to my line of sight.
Had a 2-7X on a .35 rem Contender Carbine and shot deer at 2 and 3X IIRC. Out to 75 yards. Just seemed to offer a more relaxed shot, even when things happened quick.
Don't see the 4X as ideal, but also don't see it as a handicap.
Worst case you're at 4X................can't accidentally have it at 7X