Videos tagged with Plunk Test

This guide details the field strip and internal inspection of the Derya Arms DY9, a Turkish-produced 9mm pistol imported by Rock Island Armory. Expert analysis highlights its Glock 19-like internal geometry, a unique triple-spring recoil assembly, and a chamber offering slightly more support than a standard Glock. The review emphasizes its affordability and potential value for concealed carry or general use.

This video explains the critical 'plunk test' for handgun reloading, emphasizing that cartridge overall length (COL) must be determined for each specific firearm and projectile combination, not just by book values. The plunk test involves chambering a loaded cartridge in the firearm's barrel and measuring the maximum safe COL. Subtracting a small margin from this measurement ensures reliable feeding and prevents the projectile from engaging the rifling, which can cause malfunctions. This technique is crucial for handguns with shorter leades, such as CZ models, to avoid issues like slides hanging out of battery.