Match grade 1911's may require lots of maintenance. A "GI" 1911 works just fine, in combat, or at the range. In the original trials to replace the 1911 the 1911A1 used passed the dust test while the Beretta failed. Back when the 1911 was first tested/accepted it, and the other contenders, went through all kinds of tests. They were buried in the dirt for a few days, dug up and shot. Dropped in the water for a few days, pulled out and shot. Shot till they got so hot they locked up (you can do that when you have a bunch of privates loading magazines for the officers testing the pistols) and then dunked in a barrel of water to cool them off, reloaded and fired again.
If you've ever carried/used a "GI" 1911 you'll know why. They are so loose/worn that they rattle like a can of nuts/bolts when you shake one, but it goes bang every time and hits the target just fine, too.
I'm always leery of computer models, off line testing, simulated targets/materials, etc. I've shot enough deer and groundhogs to know that the same bullets from the same gun can do something completely different/unexpected on the very next animal. The only testing that matters is real world testing. Just look at how many new gun designs make it to the market only to be recalled when real world problems show up that were never encountered in the factory trials/testing.
