Bolt fitting question

[jonh172]

After reading over Peter Laidlers "fitting rifle bolts" (more than once) I have a question regarding bolt head fit.

I understand the least amount of bolt head over turn is desirable, but is there any advantage to a very light under turn?

Would this help give a tight fit to absorb recoil down the bolt body and evenly onto the locking lugs?

With this underturn the bolt locks tight with even contact on the lugs..

Thanks in advance,

Jon

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