To flute or not to flute?

[DonVoigt]

Originally Posted by JTD

Eugen, I would just watch for a fluted pin. The main advantage over un-fluted is to vent gas in the event of a ruptured primer. John

John,
I do believe that "explanation" has been thoroughly de-bunked , it is for purposes of allowing crud (technical word) buildup to accumulate.

One member posted the original patent wording for this feature by Georg Luger and he states this as the purpose- no mention of gas venting.

If you look at the construction, this is true, the grooves don't extend far enough to vent any gas.

The Finns drilled a small hole in the bottom of the breech block for gas venting though.