unspellable,
IMHO I am sorry but I can't agree. I think your speculation on the development of the 9mm Parabellum cartridge is a pretty large leap without any historical or definitive engineering documentation to back it up.
[quote]this indicates the 7.63 Mauser chamber is bigger in some places than the 9 mm chamber <hr></blockquote>
No. what this indicates is that the fired and stretched 7.63 Mauser CASE that you used for your test is probably bigger in some places than the 9 mm chamber.
The 7.65 Luger proved to be inadequate stopping power during military acceptance testing compared to the revolvers of the same period. 9mm was the next logical step in enlarging the bore. Boring & rifling the barrel for 9mm would have been a simple operation change. Any other caliber would have required a major tooling and re-engineering change at DWM... This would have been the only logical move for a larger caliber that would fit the existing magazine and mechanicals of the Luger Design... that is why you hardly ever hear of any wildcatting of calibers being done on a Luger chassis...
The 7.65 case was blown out to appropriate dimensions to support the projectile of choice... The fact that all magazines accomodates both calibers strongly supports this theory.
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regards, -John S
"...We hold these truths to be self-evident that ALL men are created EQUAL and are endowed by their Creator with certain UNALIENABLE rights, and among these are life, LIBERTY, and the pursuit of happiness..."
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