Hornady New Dimension Custom Grade Dies - Manual (Page 6)

SEATING WITH A CRIMP
To begin, refer to the procedure for SEATING WITHOUT A
CRIMP. Follow the procedure throughout, however, DO NOT
TIGHTEN THE DIE BODY LOCK RING.
1 Once you’ve reached the preferred seating depth for the
bullet, back out the seater adjustment screw a few turns.
2 Raise the ram, with the cartridge, to the top of the stroke.
3 Thread the seater die body into the press until it meets
resistance (again, at that point, the mouth of the case has
met resistance with the crimper.)
4 Thread the seater die body into the press in small increments
(one-sixteenth turns) each time operating the handle. At the
completion of each stroke, inspect the cartridge for the
proper crimp.
5 Once you’ve reached the desired crimp (with the cartridge
still in the die), tighten the die body lock ring. Then, while
holding down the handle, thread the seater adjustment screw
downward until it contacts the bullet.
(NOTE: On presses with a cam-over action, back out the adjusting
screw 1/8 to 1/4 of a turn to allow for cam-over.)
6 Raise the handle and remove the cartridge. Check the lock
ring to make sure it’s still tight. Try another case with a
bullet. If the desired seating depth and crimp are
attained, then you can begin seating and crimping in one
operation. If not, make the needed minor adjustments.
(NOTE: For uniform crimps, cases must all be trimmed to a
uniform length.)