I've been using Weavers and Leupolds for over 40 years, now. (Well, actually, my first-ever scope on an '06 was a Weaver K2.5, back in 1952-ish. Then I was out of the huntin' bidness for a dozen years.) For deer hunting at normal distances, I keep yapping that "need" quits at 4X. But, yeah, my '06 spent years with a Leupold Vari-X II 3x9x40. Over 3,000 rounds' worth. For no particular reason in 1997 I put a Simmons 44Mag 3x10 on it, and it worked for several hundred rounds. Justin (THR) used it on an elk, in 2007.
FWIW, I know from experience that 3X does just fine on a buck at 350 yards.
That's where the 3x9 was set when I sez, "Oh! A buck!" and "Bang!" Hit where I planned to, DRT.
The years do keep on going by, don't they?