The Burris 1.5 x 4X is a great compromise for a 100+ yd pistol bec @ 1.5 you won't loose a deer walking under your stand at under 25 yds., and @ 4x you'll be able to place your shot @ 100+ yds. The field of view is narrower at all powers, so you'll have to learn to shoot with both eyes open, esp if your target is walking.
Their 2x7 or 1x4 is perfect for 200+ yd pistols for the same reasons as above. Field of view is less important as you will have to firmly rest the pistol at the longer ranges, and your target should be stationary.
Varmint pistols (~ 223 Contenders) = 9x fixed.
Use the 9x on all your pistols, to work up loads @ 25 yds. When you shoot 1 ragged hole, move to 50 yds for serious development. Your 50 yd groups "should" double at 100 yds, all factors remaining the same, and the 9x will allow a precise hold @100.
Then mount your hunting scope, and shoot @25, 50, 100 to see how you will realistically hit at those distances.
I've had a slew of 2x leupolds on my 454, 475Wildey, 44RSB. When the 100 yd shot presented, the deer looked like a silhouette target in size thru the scope, hard to differentiate rack size in a group. I wished for 4x or more!
Likewise, I couldn't pick up a deer walking walking toward my tree stand, from 25' in a typical NYS forest with a Fixed Leupold 4x on my Contender. I could plaimly see it with my eyes. With a 1.5x, my Contender would have spoken!
The moral of the story is....VARIABLE !
Anyone want to buy several 2x and 4x Leupolds, exc Condition?