Quick Tip: Understanding Cartridge Terminology скачать в хорошем качестве

Quick Tip: Understanding Cartridge Terminology

Today, Brownells Firearm Support Technician Caleb Savant dives into the terminology of cartridges. If you're new to guns and shooting, you're gonna want to watch this. If you've been shooting a while but you're not totally clear on what some of these terms mean, relax - Caleb will get you up to speed. A loaded CARTRIDGE consists of the case, primer, powder, and bullet. The BULLET is the projectile that comes out of the barrel of your gun. Rifle bullets typically come in two forms: boattail and flat base. The curved part of the bullet that tapers to the tip is the ogive. The CASE holds everything together and comes in two basic varieties: STRAIGHT-WALL and BOTTLENECK. A straight-wall case is what its name implies: a cylindrical tube, open at one end where the bullet seats. A bottleneck case consists of a case body with a shoulder that transitions to the neck. Cases can be RIMMED, NON-RIMMED (with an indented extraction groove), RECESSED-RIMMED, or BELTED, the latter usually found on magnum big game cartridges. HEADSPACE refers to the way the case stops the forward movement of the cartridge when you insert it into the chamber. Rimmed cases headspace on the rim, belted cases on the belt. Non-rimmed and recessed-rim cases headspace on the case mouth, if they're straight-walled, OR on the shoulder, if they're bottlenecked. MORE wisdom on tap at the Brownells video library: http://www.brownellsvideos.com