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I do not secure the lock ring to the die, I secure the die to the press with the lock ring meaning if in my possession there is a die, sizer or seater, with the lock ring secured to the die with the set screw, it is not my die, I adjust the die to the case every time I size a case and or seat a bullet, as far back as the 60s it was recommended not to crimp bottle neck cases unless the cases were all the same height and even then crimping reduced bullet hold (neck tension).
When crimping bottle neck cases the first tendencies is for the neck to bulge below the crimp, the bulging of the neck reduces bullet hold, after that, the shoulder bulges, back to closing the bolt with resistance, there could be 5 different reasons for resistance to bolt closing, I can not think of one good reason. Again, Dillon went with seating the bullet on one die and crimping on another, there thinking the bullet moving down while the bullet is being crimped bulges the neck, as Lyman said. I agree with Dillon but chose not to use their dies, I refused to start over with a new and different set of dies because of the expense, and I use lock out and powder dies, not possible to do on a 4 station press unless sizing and priming is done on another press OR crimping is done in another operation.
Again, I have 45s ACPs that like new store bought, factory commercial ammo, when reloading for those pistols a different technique is required with one addition operation with case support when crimping.
F. Guffey
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