[DonVoigt]

Mrerick,
That patent(by Georg Luger and not a "luger" pistol patent) and those grooves are entirely different from those in the luger pistol as modified according to the 1930 change.

What you show is a rifle bolt, which firing pin has a circular flange- and indeed it does have grooves cut into the flange.

In this case and shown in the drawing, gas can pass the flange into the bolt body and escape.

In the luger bolt with grooved striker the grooves are not deep/long enough to reach any area of the luger pistol breech bolt where the gas can escape.

You have confuted a separate and entirely different use of grooves to support what should be a debunked and spurious interpretation of the purpose of the pistol striker grooves.

All one has to do is Look at the grooves in a luger striker, study the placement and their relation to the bore of the luger bolt- there is NO other conclusion.

The luger striker grooves do nothing to help or let gas escape!

I don't interpret the patent as it has nothing to do with the luger pistol.