Barrel fitment question (early vs late profile)

[USMA-1982]

Hi everyone - I'm working on a Krag project. I have an 1896 receiver with a chopped and re-profiled RA 1-44 barrel. I'd like to restore it to 1896 rifle (or carbine) configuration.

Question is whether a post 214-216K barrel with the rounded or beveled breech end will fit an early model receiver. Pre-214K barrels had the flat breech end, but early barrels are much harder to find. Was there a corresponding machining change in post 214K receivers to fit the later beveled barrel? Anyone with experience retro-fitting a late barrel to an early receiver?

Thanks all!

Ed