Greetings all.

Recently acquired a No 4 Mk II. Was concerned about what appears to be scorching on the face of the bolt head. First thing I did was order a field gauge from Okie Gauges. Have some resistance JUST before the bolt fully closes but would have to say at the end of the day it fails. Is this a headspace issue that caused the scorching? A new bolt head in order? The bolt head is a #1 that measures 631,5.

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