Anyone here use long range handguns for hunting deer (ie: Contenders, Remington XP's, other)?

I have a Remington XP-100 in 7mm Bench Rest and have only killed a few does with it. I haven't hunted with in over 3 years so I got it out the other day and shot a few rounds through it. I can tell you this, I really need to practice. I could only get a 1 1/4" groups at 50 yards[:@]

One other question, for those of you that hunt more consistantly with a handgun. What is the longest range you have taken a deer with one?

Thanks