Vlimmeren,
The SAAMI maximum OAL is 1.169 inch. Your 1917 DWM round and S&B round appear to be just a tad over that. So far as I know all US loaded ammo is under 1.169 inch. I've had a computer crash and lost most of my drawings, but the DWM minimum was right around 1.169 inch.
The really criitical point is where the ogive rests on the front magazine wall. This point is not at the exact center of the point so does not correlate exactly with the overall length. In any case, the nose is meant to ride up the front of the magazine as opposed to a stack magazine where the nose may not even touch the magazine wall.
I suspect that some after market magazines may be slightly shorter front to back to accomodate today's shorter cartridge. This may also apply to some or all of the stainless Luger magazines.
I'd appreciate any drawings you or anyone else might send me of cartrdiges, chambers, bores, or recoil springs.
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