Modern 5" 1911s aren't typically finicky. Contrary to what they say on the Glock Forums.
Original GI Spec 1911s developed a bit of a reputation for it when people started feeding them early hollow point ammo. Hence the ubiquitous recommendation that one "polish the feed ramp." I'm no Kimber fan, but I will go out on a limb and state that I doubt serviceable Kimbers are any more fussy than any other 1911.
However, when barrel lengths get shorter, builders must be on their game to ensure that reliability doesn't suffer.
MSgt, USAF, Retired
NRA Life Member
The hardest thing to explain is the glaringly evident which everybody had decided not to see. - Ayn Rand