I've used both 2X and 2.5X Leupold (and other makes) scopes for many years on hunting rifles from .375 to .458. They work splendidly on hunting rifles and are not a limiter for long range shots on big game from deer on up. I call 300 yards a long shot. I also don't have trouble using rifles with iron sights for the same shots. Most irons as delivered on a rifle are not suitable and need to be changed. Good irons are not a limiter. Even my M94 in .32 SPL will put 5 into 1 1/2" at 100meters off the bags with select ammo, but would not be suitable for longer range due to their over size beads and U knoches, not to mention the ctg.'s unsuitabliity for much longer shots.
; True testing of sights is from hunting positions, rarely observed during most hunter's single 'sighting-in" session each early fall.