When a supposed 'expert' and moderator on another forum posts the following (refering to a No4)

"If your rifle has the screw going through the stock from left to right, just in front of the trigger guard a few inches, it has been to India. They also would re-cut the chamber to a slight oval at the breech. This allowed their Monsoon rain to escape out of the rifle if it was loaded with the muzzle up. While this help prevent the splitting of the barrel when fired, it plays hell on the walls of our commercial brass. It does not seem to affect the military loaded cases as the walls are much thicker".

and

"What I was hoping was that you took notice of that so called Number 1,2,3 bolt heads was the fix for a too large head spacing problem. It is not. The bolt heads were machined/filed down to fit what ever spacing problem was done by the Armorer".
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