Early in my teens I bought a Colt M1911 manufactured during World War I. Worn bluing, original diamond pattern grips, lanyard rings on magazine and mainspring housing. Paid $20. Surplus ammo was cheap, sometimes two or three cents per round. Shot a small mountain of GI 230 ball ammo through the Colt, including then-plentiful 1943 production with zinc-plated steel case. It could not be stopped. Even when I got into handloading, I never loaded for it. The feed ramp was a narrow scallop; reckon non-ball would not have worked.
Many years later I met Ben Kilham, gunsmith, naturalist and, quite likely, America's foremost authority on black bear. Kilham worked at Colt's in Hartford until, as he described it, "They laid off all the people who know how to make guns." Kilham described a period when Colt experienced many 1911 returns due to malfunctioning. Then, one of the old hands reached into an old file and pulled out John Browning specifications. Let's just make some to these drawings, the guy said. They did, and the guns worked perfect. Too bad that guy was not in management.
Some people, including gunsmiths, believed that the 1911 was an inherently problematic design for non-ball feeding. Various custom builders ignored that assessment and discovered through serious study and hard work that the 1911 can be both fantastically accurate + reliable at the same time----with non-ball hollow points and SWC projectiles. Foremost among these builders is early handgun silhouetter and master pistolsmith, Les Baer, whom rewrote the definition of a RELIABLE ACCURATE 1911.
Not that Colt completely forgot how to make guns. In fact, the Colt Nation Match (pre-Gold Cup rollmark) proved in the late 1950's through 1960's that great accuracy and reliability combine perfectly in the 1911. And, let us note, excellent Series 80 .45 ACP's and Delta Elite 10mm Auto's have come from Colt's production line.
Ben Kilham had another observation on some contemporary makers of the 1911: "They know how to make parts. They just don't know how to put them together."
Forums such as this should be a source of buyer experience, which cannot be found in magazines.
David Bradshaw