Back in 1985 I was trying to sight in a Winchester Model 70 featherweight in 270 Win. with a 3x9 Tasco on it. I had only shot my first gun up to that point which was a Remington 700 in 6mm Rem with a 4 Power Leopold. The eye relief was a lot better on the Leopold than on the Tasco. Had my pickup truck pulled up about a 100 yards from the target and used the toolbox to sight from. Still have the scar in between my eyebrows from the kiss that Tasco gave me.