The Lee Neck Sizing.2- Die Set includes Neck Sizing Die, Micrometer Bullet Seating Die, Universal Shell Holder, powder dipper and instructions with load data. Select this die set if you are reloading brass that has been fired through your firearm only. Nothing helps accuracy more than uniform start pressure, that is, the level of pressure to begin the bullets travel down the bore. Bullet seating depth affects this important pressure. For best accuracy, seat the bullet so the Ogive is touching or nearly touching the rifling.The Lee Precision Micrometer Bullet Seating Die features dead length bullet seating with smooth, accurate adjustment. Tests prove sliding bullet guides provide cartridges with the least bullet runout. When used as a dead length bullet seating die, the body contacts the shell holder assuring precise uniform seating depth. Laser engraved micrometer thimble and body is easy to read with divisions representing one thousandth of an inch, reads just like a precision dep...