What do you plan on doing, how far is semi LR? sounds like you dont want to fidget with the thing, you want to set it up and shoot. ?
burris (the olderones and now i hear the very new ones) held a zero like a vise, but the adjustments lagged. the new diamond series is reportedly crisp and repeatable.
if you want to shoot to 500 yards or so and dont want to fiddle with the turrets, then the ballistic plex of the burris is excellent, so is the shepard scope, and several other scopes.
lilja told me years ago to ALWAYS check your scope out, the reticle and repeatability when you get it. for example, a mil-dot is supposed to have 3.6 in covered at 100 yards. most dont. some are 3.4, 3.5, 3.6. the dot itself is supposed to cover 1/4 th of that or .9 in. again most dont. you need to know how much power you can handle on a scope. you dont want a straight 40X on something you take into the brush. there a lot of people who cannot handle much over 6-10 X. nothing wrong with that. the most proficient sniper in modern history was a German with over 3000 confirmed and he used a straight 6 or an 8 if he could get it, 4 a lot of times and he had kills past a mile.
with a little old 8 mm mauser.
so, if you want a good scope that holds, but you dont want to mess with it in the field, any of the scopes listed here are great. bushnell is greatly underrated. for ruggedness i have 4 burrises that have survived 20 years in the alaska wilderness and arctic and NEVER moved off zero. the leupolds all busted but 2. some even bent under the recoil of a heavy boomer. but they have good optics.
get one, have a pro set it up and watch him, pick his brain about the procedure. get the dots, lines, etc. checked out to your load ( i have one scope that i dont like moving the turrets, set it up on a old 300 WM shooter. with the mil-dots set up for 700 yard zero, i never move it and it shoots out past 1100 yards with out me touching it, but just knowing where on the mils its needed with the yardage. quick and easy, drill deer and caribou between the eyes at 500 yds.)
after the set up, shoot a lot at the real ranges. nothing beats experience and the liscense on rocks and paper is free.
good luck and God speed.
doc