The Weaver T-series erector system travels as known quantities,via input dialed into their turret(s). Meaning the corrections you dope,are actually imparted and this is no small thing.

I'll gladly take a hit in optical "brilliance" or other concessions regarding the view,but I gotta have finite control in regards to bullet placement interacting the crosshair proper,which makes me a pig of a Leupold Slut.

I'm anti-Weaver as a whole,though their T-series do perform.