Re: 20 BR feeding issue
The 20x47 doesn't have the feeding problems that the BR does, I know a bloke with one which feeds reliably and I think it would be easier on throats than the 250.
The 20BR does everything you need in a 20 cal otherwise. That's the only reason I'd go for the 20x47. In fact, when the throat goes in this barrel I might even get it reamed out to 20x47.