Post mortum LE bolt failure...

[Ridolpho]

With apologies to the Moderator for helping to keep this going, I'm curious- does a pierced primer not potentially allow for direct communication with the very high pressure volume within the bore? Flow into the bolt head would be controlled by the very small perforation in the primer (orifice or choke) but consider the energy obtained by tapping off gas well down the bore in actions like the SVT or G/K43. The G/K43's, in particular suffer from severe pounding in the bolt/ carrier. I believe I see gas vent holes in both No.1 and No.4 bolt-heads so is the main consideration here that these are large enough to deal with any conceivable flow into the bolt from whatever? It's not like this issue wouldn't have occured to the designers!

Ridolpho