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Bulged .40 Casings? - Does your .40 P99 do this?

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Discussion Starter #1
Does your .40 P99 bulge brass upon firing???

Based on a recent post I read, I wonder if ALL .40 P99s will allow a .40 casing to bulge a bit near the case head after firing.

Mine does, and I have a friend whose .40 SIG does as well.

Please respond to the poll above, and perhaps we'll all learn something interesting.  Thanks for your participation!

-stunks
 

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Discussion Starter #3
yeah, sniper350 has helped me figure out that the casing is just swelling, not bulging like a glock kb!

On another note, there's a guy lurking on this board that seems to have the bulging problem on his fired casings, and I was curious if anyone else noticed it too.

-stunks
 

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I think I am the person youre reffering to that has a bulge. I talked to Walther this afternoon and was told that the .013 change in OD was normal, well atleast within specs.
 

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This is not just in P99's, this is in pretty much any firearm.

In the other thread, someone made mention of the fact that the chamber is just a smidgen larger than the cartridge case, to allow for smooth insertion and extraction and to allow varying tolerances by different ammunition manufacturers.

This is normal.

Reloaders should know this, that's why you have a "resizing die"...
 
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