posted on Mar, 28 2013 @ 10:00 PM
Rimfire is usually found in .22's, .17 HMR, and the generally smaller calibers. The rim of the case is struck, resulting in ignition and the firing
of the bullet. Rimfire is generally cheaper than centerfire.
Centerfire is the most common type of ammunition out there. 9mm, .45acp, .223, ect...Lots and lots use centerfire. Basically, after you pull the
trigger, the firing pin is pushed forward and into the primer, resulting in an explosion and expansion of gases, sending the bullet forward. Brass
case centerfire can be easily reloaded, and I think maybe another type can be to. Ive heard Steel case ammo cannot be reloaded, but Ive also heard you
can reload it, but it is very very difficult and not really cost effective because of so much extra time and effort spent. (Steel case is generally
cheaper than brass also)