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.
Thread: roll crimp vs taper crimp technical question. roll crimp vs taper crimp technical question I've read enough to know the different applications of roll vs taper crimps, however, I am (without sounding dumb) still lost as to how to spot the difference. I mean, a heavy taper crimp will look just like a roll crimp, right?