Lock the slide to the rear on a 1911 and press the barrel to the rear and look at the relationship of the barrel throat and the feed ramp of the frame. There should be a ledge. The barrel should rest on the curved support surfaces of the frame. Look at the gap between the bottom edge of the feed ramp of the barrel and the forward edge of the feed ramp of the frame. This gap should be at least 1/32" and could be as much as 1/16". If there is a smaller gap than this, (or no gap at all), the chambering cartridge can and probably will hang up on the lower lip of the barrel’s ramp. That gap is absolutely crucial to smooth chambering. If you old 1911 that you had previously was hanging the bullet on the bottom of the barrel throat, someone had probably already removed too much of the ramp...or it was manufactured out of spec. A friend of mine had an old Llama 1911 that did that and the barrel throat had to be cut back.
As long as the above-mentioned "ledge" is there, and all surfaces are relatively smooth, and the gun is assembled properly, then most feeding issues can be traced to the magazine lips and/or follower.
JMHO, FWIW