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9mm and 380 dies

I have a set of dillons 9mm dies, Can I use them to reload 380. acp?????

No. .380ACP cases are shorter than 9mm, and have a straight case wall.

9mm is a tapered case, wider at the base than it is at the top. The .380 is not merely a shorter version of the 9mm. It uses different dies and shellplate from 9mm

No, the case diameter and head diameter are different.  You need a different shell holder and .380-specific dies. 

Onec in a while a .380 case gets into my 9 mm empties and when it goes through the XL-650 it is VERY obvious it's a wrong case.

 

And trust me it is worth the investment for the .380 kit and dies from Dillon to do the .380 correctly. Tried lots of stuff, once I had the right stuff I loaded 500 rounds for shooting lickity split. Well worth my time not to deal with finicky stuff!

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