Luger Heavy Barrel Not Cycling

[unspellable]

DWM claimed the original 7.65 pistol load ran a 93 grain bullet out of a 4.5 inch pistol (not test barrel) at 1220 fps. I have reason to believe this claim is quite true.

Winchester claims 93 grains at 1220 fps from a 4.5 inch barrel. I have a LOT of reason to believe this is NOT true. I'e never got close to 1220 from any of several pistols with 4, 4.5, 5, or 6 inch basrrels.

The original carbine load ran around 40,000 cup and I believe the working carbine load also served as the proof load for the pistol.

SAAMi spec is 28,000 cup for the 7.65 vs 32,000 cup for ythe 9 mm. Hey guys! It's the same pistol in either caliber! Why down grade the 7.65?

Timing: The Luger unlocks fairly late compared to say, a 1911. The pressure will drop to zero before unlocking begins.

At a given velocity, a heavier bullet will provide more impulse. Keeping in mind there is a pressure limit.

[lfid]

for possible reference here is an original dewey custom luger base with the original micro sight replaced with a bowen sight

the original micro sight had a damaged front section from usage as elevation - was bent at the point of the elevation adj screw

thanks
Bill