I think you came to a good resolution, HiBC. I've had a number of 1911's exhibit a wee bit of wear on the top of the barrel at the ejection port; no harm ever came of it. I have done exactly what you described in cases where the radius interfered with barrel/frame bedding.
“Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals. It can only be ensured by instinct, sharpened by thought practicing the stroke so often that at the crisis it is as natural as a reflex.” ~ T. E. Lawrence