Fasthenk65 Posted September 16, 2018 Share Posted September 16, 2018 What can I do to get rid of the typical Dillon 'belly' with 9mm rounds? My hornady press makes rounds perfect. Not that it is a real problem, they load.... But I want the rounds to be perfect Link to comment Share on other sites More sharing options...
Fasthenk65 Posted September 16, 2018 Author Share Posted September 16, 2018 BTW Love the 650!! Link to comment Share on other sites More sharing options...
JasonandMichelle Posted September 16, 2018 Share Posted September 16, 2018 I had a similar problem recently. I bought a Lee factory crimp did and my problems were solved. Does that help?Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
GrumpyOne Posted September 16, 2018 Share Posted September 16, 2018 What do mean by "belly"? Do they kind of look like a coke bottle shape? If so, that is normal and desirable. Prevents bullet setback. Link to comment Share on other sites More sharing options...
AHI Posted September 16, 2018 Share Posted September 16, 2018 1 minute ago, GrumpyOne said: What do mean by "belly"? Do they kind of look like a coke bottle shape? If so, that is normal and desirable. Prevents bullet setback. +1 Link to comment Share on other sites More sharing options...
RichJacot Posted September 17, 2018 Share Posted September 17, 2018 I agree with Grumpy too. Link to comment Share on other sites More sharing options...
jhgtyre Posted September 17, 2018 Share Posted September 17, 2018 The carbide insert in Dillon dies is longer and is tapered to size the brass further down. When you flare the brass back out this leaves a portion of the brass still tapered below the flare. Then when you seat and crimp the bullet the tapered portion below the flare is visible giving the finished round a "coke bottle" appearance. As others have mentioned this does help prevent bullet setback and is by design. Link to comment Share on other sites More sharing options...
36873687 Posted September 17, 2018 Share Posted September 17, 2018 Lee u die an lee factory crimp. Used this set up for yrs Link to comment Share on other sites More sharing options...
HesedTech Posted September 17, 2018 Share Posted September 17, 2018 I’ve used both the Dillon and the Lee U die for resizing 9mm in my 650 and both size the brass the same leaving a taper that has a “waist” after the bullet is seated. For speed the Dillon is more forgiving when the brass isn’t quite set in the shell plate, but I like the Lee decapping pin better. If you are writing about the bulge at the base of some brass, that can’t be fixed in the resizing die. You will have to use the Lee Bulge buster or something similar to remove that. Don’t forget 9mm is not a straight case like others and both company’s dies taper the brass smaller than specs. Link to comment Share on other sites More sharing options...
Steve RA Posted September 17, 2018 Share Posted September 17, 2018 All my Coke Bottles bulge in the middle, I've always felt the term "wasp waisted" better describes the cases that are slightly smaller in the middle than at both ends. This is a desirable final result as it really helps prevent bullet setback, even after a fairly hard hit on the end of the bullet. Link to comment Share on other sites More sharing options...
mveto Posted September 17, 2018 Share Posted September 17, 2018 Dillon just shared this on Instagram earlier today, thought it would be relavent. Link to comment Share on other sites More sharing options...
muncie21 Posted September 21, 2018 Share Posted September 21, 2018 OP, if you don't like the appearance use a Lee sizing die (not U-die) instead of the Dillon. I have both dies on dedicated toolheads and can easily identify which bullets were loaded with the lee versus the dillon dies. BTW, functionality there isn't a difference in the quality of the finished cartridge. Link to comment Share on other sites More sharing options...
Fasthenk65 Posted October 7, 2018 Author Share Posted October 7, 2018 Tnx for all the answers. I start liking the wasp waist Link to comment Share on other sites More sharing options...
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