[Michael Zeleny]

Your analysis appears to assume the popular theory, that the toggle action is not nearly as sensitive to the chamber pressure, as it is to the recoil impulse. In other words, we ought to be able to improve ballistics with no wear penalty, by upgrading the springs and adding some ballast to the cannon. I understand the reasons for hot-rodding carbine ammo accordingly, and expect them to apply in spades to my 180mm factory heavy barreled W+F 06/29. I am trying to find a Swiss source for replicating this piece, but so far without luck. Generally speaking, my experience suggests that bottleneck 7.65 Para is much more reliable and a bit more accurate in a Luger, than its tapered straight-walled junior sibling. Hence my interest in upgrading its ballistics to a level appropriate for social work.

Incidentally, the W+F 06/29 was made long after 1918, but not as any kind of reproduction.