Introduced in 1899 and originally named the 32 Browning Short and 7.65×17mm, the 32 Automatic Colt Pistol has been chambered in more handguns than any other cartridge. It was extremely popular in Europe. Designed for use in blowback-operated semi-automatic pistols, pressure was standardized at 23,000 psi, which is in a ballistic mid-ground between blackpowder revolver rounds of the mid-to-late 1800s and more modern cartridges such as the 9mm Luger. Because of this and limited case capacity, performance is extremely modest by modern standards. Nevertheless, the 32 still has a home in applications in modern lightweight, locked-breech, concealed-carry handguns where the shooter cannot tolerate or will not learn to tolerate significant recoil. With the best modern components, the 32 ACP has proven to be far more effective than throwing rocks and in proving the old maxim that the gun you have with you because you will carry it is always more valuable than the far more ballistically capable gun you left at home. In our concealed-carry classes, we had hundreds of men who swore the only thing they would carry would be a 45. It was interesting to run into those men several years later who were carrying concealed only to find out they were packing a 32 or a 380. Already knowing the answer, I would ask, why? The answer was always a variation on: … because the 45 is such a pain to haul around. As with any pistol round headspacing on the case mouth, best practice is to apply a taper-crimp after seating the bullet. This helps to lock the bullet in place against chambering forces that might otherwise drive it into the case. I cannot too-strongly recommend getting a second seating-and-crimping die so you can have one adjusted to only seat the bullet and the second adjusted to only taper-crimp the case mouth. Generally, attempting to do both operations in one step is a recipe for damaged and destroyed cases.