ms1454 Posted October 4, 2009 Share Posted October 4, 2009 (edited) I am using a 550 all with Dillion dies and I am reloading .40 with range brass 180 grm TCFM. OAL is 1.128. There is a bulge in the middle were the end of the bullet is in the case all the way around the enitre case. I have tried to some suggestions to not flare and just barley taper crimp. This helped slightly but it is still there. They shoot fine but still worried about it. Any tips? I have a U die on the way already as well. Edited October 4, 2009 by ms1454 Link to comment Share on other sites More sharing options...
G-ManBart Posted October 4, 2009 Share Posted October 4, 2009 If they chamber and shoot fine don't worry about it. I assume this gives them a coke bottle shape...sort of narrow in the middle? Do a search on "coke bottle", "hourglass" or "bulge" and you'll find hundreds of references to this. Generally speaking the answer to 99% of the questions you can come up with here can be found using the search function (it's better than on a lot of sites). Link to comment Share on other sites More sharing options...
GrumpyOne Posted October 4, 2009 Share Posted October 4, 2009 It's a typical Dillon phenom. Like Gman said, lots of references to it on the forum. I've loaded thousands of 40S&W on my 550, all have the "coke bottle" shape. It actually is a good thing, it prevents bullet setback when chambering. Link to comment Share on other sites More sharing options...
mtcur3 Posted October 5, 2009 Share Posted October 5, 2009 I use a Lee factory crimp die to smooth mine out. Link to comment Share on other sites More sharing options...
Lonely Raven Posted October 5, 2009 Share Posted October 5, 2009 I use a Lee factory crimp die to smooth mine out. I get the coke bottle on my 9mm stuff on my RCBS Pro2000. Over 5000 rounds an zero issues with it. Link to comment Share on other sites More sharing options...
Mark K Posted October 5, 2009 Share Posted October 5, 2009 I get it on every caliber I load. I used a EGW U-die for sizing and that my contribute, but they all work fine. Don't worry, be happy. Mark K Link to comment Share on other sites More sharing options...
calishootr Posted October 5, 2009 Share Posted October 5, 2009 as I recall hearing Dillon dies are actually undersizing the case a bit so thats where your getting the 'hourglass' condition, which if it drops in a guage or the actual gun's barrel??? no sweat, no problem!!!! shoot em up Link to comment Share on other sites More sharing options...
Audifn Posted October 5, 2009 Share Posted October 5, 2009 I also get the "bulge" on both my Major 9 cases and my .40s, all my cases are case pro'd before loading, and I've never had an issue with them chambering or not passing the case gauge check. Link to comment Share on other sites More sharing options...
rfwobbly Posted October 10, 2009 Share Posted October 10, 2009 (edited) ... "coke bottle", "hourglass" or "bulge" and you'll find hundreds of references to this.... "Coke bottle" ??? You guys are selling yourselves short. That's the "Marilyn Monroe" look !! Edited October 10, 2009 by rfwobbly Link to comment Share on other sites More sharing options...
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