A few months ago I bought a set of Redding's Pro-Series Titanium Carbide dies for assembling 10mm Auto ammunition in my Dillon RL 550, thinking that I would be 'upgrading' from the Dillon dies I bought along with the press some time ago. But the taper crimp die turned out to be a huge disappointment, failing to provide enough crimp to ensure reliable feeding in either of my 10mm Auto pieces. Upon visiting a friend of mine who owns a custom ammunition manufacturing outfit in Texas City, however, I was handed a Lee taper crimp die and sent back to Houston.
And all I had to say after screwing that thing into my press and churning out a hundred rounds was; "Damn, look at the friggin' crimp on these loads!"
Question: How much can a 'severe' crimp like I'm getting with this Lee crimp die increase the pressure of my loads? I was throwing 7.8 grains of VV N3N37 into the case and seating 180-gr Zero FMJ slugs before the Lee die as well as after. But recoil from the ammo assembled with the Lee die is decidedly greater than with the Dillon or Redding dies.
And all I had to say after screwing that thing into my press and churning out a hundred rounds was; "Damn, look at the friggin' crimp on these loads!"
Question: How much can a 'severe' crimp like I'm getting with this Lee crimp die increase the pressure of my loads? I was throwing 7.8 grains of VV N3N37 into the case and seating 180-gr Zero FMJ slugs before the Lee die as well as after. But recoil from the ammo assembled with the Lee die is decidedly greater than with the Dillon or Redding dies.