Spirex288--
I have no experience with the Kimber alloy .45, but perhaps the following experience and observations might help---
My LW Colt Commander was made in 1969 and was used when I bought it in 73. I've probably only put some 4,000 rounds through it. In about 1971, Skeeter Skelton did an article for Shooting Times magazine in which he put over 5,000 full power loads through a CLW. It still shot quite well from a Ransom Rest. My old gun looks like a disaster area, but this is mostly from constant carry. The slide's been refinished twice and the frame went gray long ago.
I've probably carried this pistol 70 percent of the days for the past quarter century. A short, light weight .45 auto is not the most pleasant pistol to shoot and is a piece to carry much and shoot little. The "New" will wear off the pistol before a year is out. If you're fortunate enough to be able to go to the range once a week for a whole year, and put 50 rounds through THAT pistol each time, that's only 2,600 rounds in a year. But if you only shoot it half the time, it'll take you some four years to do 5K rounds. If it will do three inch groups at 25 yards, that's great. Five inches is plenty of accuracy for self defense. That's about what mine will do, and it is no trick to stay on a silhouette target at 50 yards. No trick for the pistol, that it. Its getting to be a stretch for my eyes.
If you take even decent care of the Kimber and use loads no hotter than factory, there's no reason your grand children shouldn't enjoy the same pistol.
Best of luck---
RR
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---The Second Amendment ensures the rest of the Bill of Rights---