Unless otherwise noted, body diameter -.007. It's right under the CARTRIDGE title.Where's that tolerance indicated in the SAAMI drawing/Post #74
(I usually look for one but did not see it)
Unless otherwise noted, body diameter -.007. It's right under the CARTRIDGE title.Where's that tolerance indicated in the SAAMI drawing/Post #74
(I usually look for one but did not see it)
SAAMI leaves it up to the manufacturer to match bullet diameters with case wall thicknesses that will meet both the bullet and the cartridge specs when assembled.
I would never have thought that applied to the mouth area, as that would
imply sizing the 355 bullet down by the same amount was OK.
(Being a cast bullet guy, that's to be avoided)
Do you mean compression?lee hand press. When I crimp the 9mm I can feel the brass getting drawn out,
exterior of the cartridge is under tension getting stretched out as crimp is applied.
when I go to crimp as a separate step there is now a space available for the crimp to go so it is not shrinking the drive band diameter of the bullet.
What I mean to communicate when I posted #86 is:Can you explain what you mean there ? Are you saying if there is no crimp groove the die and press are unable to crimp into the bullet jacket or even the soft lead ?
If so , I counter with
223 - 77gr SMK on right
200gr 45acp plated HP = light , Medium and heavy crimps all fire from my 45's
Case mouth spec is 0.3800" - 0.007", so 0.3873" to 0.3800". If the case mouth crimp doesn't get it below 0.3873", then even a worst-case wide SAAMI spec chamber will still headspace on the case mouth.