Tools & Resources. Most Men Don't Need PSA Tests, Doctors' Group Says. MONDAY, April 8 (HealthDay News) -- Men have long been encouraged to get prostate cancer screenings, but there's insufficient evidence that the benefits of a PSA test outweigh the substantial risks associated with the screening.
There are two types of crimp used when reloading handgun cartridges: the roll crimp and the taper crimp. Roll Crimping. With a roll crimp, the diameter at the very end of the case mouth is reduced, and rolled inward toward the bullet, leaving a slight radius at the top of the case.
The Morse taper twist drill bits pictured right are used in metalworking. The full range of tapers is from 0 to 7. The Morse taper allows the bit to be mounted directly into the spindle of a drill, lathe tailstock, or (with the use of adapters) into the spindle of milling machines.