Hi All:

     While attempting to load some 32-40 shells I ran into the problem of getting the shells to chamber.  I flared the case mouths lightly to avoid shaving the bullets but the flare is preventing the shell to enter the chamber.

      This problem led me to slightly "crimp" the shell mouths to enable me to chamber the rounds.  I have been told not to crimp these bullets.  What else can I do? Perhaps a "M" die is in my future.

      I used a .308" M die to slightly flare the case mouths and adjusted my bullet seating die to swage the case neck enough to permit chambering.

      Perhaps I need a M die, Lyman or C&H, with a shank that will open the case mouths slightly.  The bullets that I am attempting to use measure .320".  What diameter of a M die do I need for this bullet.

      I have loaded 30 caliber bullets before with no problems with the .308 M die so I am guessing that I do in deed need a M die for the .320 bullets.  Am I correct?

      Oh yes, somebody asked me where I got the load for 14 grains of 2400 from,and it came from the first reloading book that I bought circa 1956.  It is a Lyman book.  I will try 12 grains with pistol primers etc. in the future.

      Any suggestions as to what I should do?

                                                                          TIA,

                                                                           Franchi

You could try sizing the loaded cartridges in your resizing die. If your die will allow it remove the decapping thingamabobber from the die. 
I used to do this with my 40/50 SS cartridges. I finally neck reamed the chamber so dont have to do it now. 

       Joe.

Bump it into your seatting die untill it goes in the chamber. If it has a crimp in the case when it finally inters, then all you can do is neck turn the brass or size the bullet down but, don't size it below groove diameter.

The more expensive way is to do like Joe and ream the neck to the loaded Diameter.

Frank