What's the original spec's on barrels???

[Sieger]

</font><blockquote><font size="1" face="Verdana,Tahoma,Arial,Helvetica,Geneva">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Originally posted by John Sabato:
<strong>thanks for the info and examples Rick. The barrel specs for 9mm Parabellum might be old, but they haven't changed...

Some manufacturers that produce not only 9mm weapons but also .38/.357 caliber might standardize on the large size bore which would be a slightly sloppy fit for standard 9mm slugs
</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Hi John:

The original DWM specs. specify a .357 minimum groove allowing up to a .358 groove. The original projectiles were .354. Why the slop?!?

It seems that the newer 9mm firearms have kept the .357 to .358 groove. Again, why the slop?!?

A properly designed "new" barrel should have .355 grooves to fit the projectile!

The 9mm has never been know for its accuracy. Perhaps the sloppy fit is part of the problem (and easily corrected).

Sieger