FWIW, the clearances are not just for easy action, etc, removal from the bedded stock - if the bedding is too tight there, and on the sides of the action, barrel/action vibration harmonics, and ergo accuracy, is usually negatively effected.
I've bought several used rifles (every now/then) at a deep discount because they were "inaccurate" - only to find they were tightly glas-bedded everywhere, most likely by someone who didn't know better.
A half-hour's work with gouges/files usually turned a rifle that was grouping 6"-8" @ 100yds (my "B4" groups) into an MOA or better hole driller (my "after" groups).
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