Jimbo76 Posted October 23, 2012 Share Posted October 23, 2012 Just ran my first batch of 9mm reloads throught the Dillon 650. Once fired cases and PD 124g JHPs. They appear to be thinner in the middle ? Is this normal? I am using a load idea from this forum, Power Pistol..5.4 to 6 grains. I purchased the once fired cases online and they were tumbled but not sure if they were sized. All Dillon Carbide dies. They easily pass the gage they just look a little weird. Is this normal ? Case is wide at the bullet and primer end and a little "bow" in the middle that looks a little narrower ? Link to comment Share on other sites More sharing options...
twodownzero Posted October 23, 2012 Share Posted October 23, 2012 Yes. 9mm Luger is significantly tapered and should be that way. The "coke bottle" effect is entirely normal. Link to comment Share on other sites More sharing options...
gng4life Posted October 23, 2012 Share Posted October 23, 2012 Yeah, just like Zero said, that's normal. If you search for coke bottle, you'll find tons of stuff on it. Good luck... Link to comment Share on other sites More sharing options...
Sarge Posted October 23, 2012 Share Posted October 23, 2012 Another yes . It is actually desirable in that it shows there is plenty of neck tension. Link to comment Share on other sites More sharing options...
Steve RA Posted October 23, 2012 Share Posted October 23, 2012 It better supports the bullet from being forced further into the case during the loading process in the firearm. Usually referred to as "wasp waisted" as the old coke bottles actually bulged in the middle. Link to comment Share on other sites More sharing options...
FightFireJay Posted October 23, 2012 Share Posted October 23, 2012 My .40 S&W reloads show a tiny amount of this, but my 9mm shows much more, I think this is because of the case taper. It was already mentioned, if you see some taper, you know you have good neck tension. Link to comment Share on other sites More sharing options...
Jimbo76 Posted October 23, 2012 Author Share Posted October 23, 2012 Thanks guys I really do appreciate the info ! Now to shoot them yeah !! Link to comment Share on other sites More sharing options...
echase1 Posted October 23, 2012 Share Posted October 23, 2012 Was wondering the same thing once I got my 650 setup, but really did not know how to accuratly articulate it... Thanks for the post and the answers. Link to comment Share on other sites More sharing options...
fiddler Posted October 23, 2012 Share Posted October 23, 2012 Guys at the range may tease you about it. Other than that no ill effects. Wear a pink hat and no one will notice your funny looking cartridges. Link to comment Share on other sites More sharing options...
CeeZer Posted October 24, 2012 Share Posted October 24, 2012 Only normal on a Dillon press. Hornady LNL doesn't do it. Link to comment Share on other sites More sharing options...
Sarge Posted October 24, 2012 Share Posted October 24, 2012 Only normal on a Dillon press. Hornady LNL doesn't do it. How is that so? The dies are what do the sizing, not the press. I run a U-die and could put it on a LEE single stage press and the results would be the same as on my 650. I'm curious. Link to comment Share on other sites More sharing options...
CeeZer Posted October 24, 2012 Share Posted October 24, 2012 'cos I use Hornady dies as well? Link to comment Share on other sites More sharing options...
rfwobbly Posted October 28, 2012 Share Posted October 28, 2012 What CeeZer said may be true... IMHO most die makes use a simple carbide ring to construct their sizing die. This is perfect for true straight wall cases like 38 Super, but on 9x19 it pushes the middle of the case inward, instead of retaining the slight taper. As stated above, it really doesn't hurt anything, it just produces the "coke bottle" look after the case mouth is expanded back out. However, Hornady advertises that their carbide for the 9x19 is actually tapered internally. That would make it the only tapered carbide I'm aware of. So the "coke bottle" or "wasp waist" look is probably a by-product of the single-diameter carbide ring being pushed down over a tapered surface. If you use an older set of non-carbide dies, such as the ones still offered by Redding, there is no "coke bottle" look. Link to comment Share on other sites More sharing options...
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