I'm not brave enough to test mono's in my drillings, but the guys at Hornady feel banded bullets should be OK. The techs at Nosler told me the same thing.

Ackley would probably have shot them. He said the bullet is fully sized to the bore in the first few inches of travel. This would presuppose that the bore is uniform the whole way along. I would assume they are in modern drillings, but my experience with many pre-war guns showed me those bores are anything but up to modern standards.