Well, I was able to take possession of my 2 new Springfield 1911 pistols today. One is a stainless Range Officer in 9mm. The other is a MIL-SPEC in 45 ACP.
I brought them home and gave them a good cleaning. Both barrels appear to have fairly generous throats so there should be no problem feeding cast with normal OAL.
I tested my reloads for feed in the 9mm and they fed manually from the magazine perfectly. The loads I developed for my Beretta 92FS have .358 or .359 diameter boolits in them. They chambered in this pistol fine with no sticking or needing any assistance. Hopefully I won't need to do anything different for this pistol.
The equipment for making boolits and reloads for the 45 ACP should arrive tomorrow or the next day.
Hopefully I can get to the range soon and find out how well they shoot.