Lee-Enfield, and Enfield (P-'14 and M-1917) barrels were never ASSEMBLED that tight. In fact, they were assembled barely hand-tight.
What makes them such absolute B*TCHES to remove is the Proof round, which actually EXPANDED the chamber .002" and jammed the threads together.
THIS is why the Ross had trouble initially: Ross used the Enfield dimensons on his reamers, but the Ross barrels were much tougher and did not expand into the threads as readily. Result: Ross chambers, reamed from identical reamers, which were measurably tighter than LE chambers.
You have to KNOW what you are doing with these rifles or else you end up with a steel pretzel instead of a receiver. Straightening a twisted receiver is very nearly impossible.
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