Thompsoncustom
07-09-2013, 02:44 PM
I've been having some undersizing problems lately after I turned down my lee expander plug which is no big deal as that gave me a good reason to buy an M die. So M die came in today and I loaded 40 rounds and decided I better pull one just to make sure it's not undersized. Before I loaded the bullet is measured .3565 and after I pulled it .351
What the heck is going on. Seems like no matter what I do these days all my bullets are undersized by the case. This is how my reloading has been going. On the Hornady LNL I resize and deprime and reprime the case, after that is all done I set up the Lyman M die is station one, LNL powder drop in station two, Three empty, 4 lee seating die, and 5 empty.
After I found out they were being undersized I back off all crimp completely and tired again but that made to difference.
The bullets are lee 125gr WW that are air dropped. Could the lead be to soft? I would think you could run pure lead so I don't think that's the issues but at this point im lost.
What the heck is going on. Seems like no matter what I do these days all my bullets are undersized by the case. This is how my reloading has been going. On the Hornady LNL I resize and deprime and reprime the case, after that is all done I set up the Lyman M die is station one, LNL powder drop in station two, Three empty, 4 lee seating die, and 5 empty.
After I found out they were being undersized I back off all crimp completely and tired again but that made to difference.
The bullets are lee 125gr WW that are air dropped. Could the lead be to soft? I would think you could run pure lead so I don't think that's the issues but at this point im lost.