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Ammunition Shell

Ammunition Shell

Ammunition Shell

(OP)
Can anyone tell me where online I might find a detailed schematic of an ammunition shell. I need to see the breakdown of the cap, casing, bullet, etc.

RE: Ammunition Shell

(OP)
I'd like a simple schematic of a small to medium calibre firearm shell identifying tne casing, the cap, etc.

RE: Ammunition Shell

(OP)
Close enough. Thanks.

RE: Ammunition Shell

(OP)
Is the purpose of the rim to hold the casing while the bullet fires?

RE: Ammunition Shell

Since the casing is behind the load, it moves backward with the weapon when bullet fires.

So, the rim is a means of ensuring that the primer is placed in the proper location relative to the hammer.



TTFN

RE: Ammunition Shell

(OP)
Please elborate on, "the rim is a means of ensuring that the primer is placed in the proper location relative to the hammer".

RE: Ammunition Shell

rims usually appear on straight-wall cartridges, which means that without a rim, there is no way to ensure that that the cartridge doesn't slide too far down the barrel for the firing pin to engage.

TTFN

RE: Ammunition Shell

(OP)
How is the rim physically engaged?

RE: Ammunition Shell

The rim simply sits against the back side of the cylinder and keeps the cartridge from sliding forward down the hole in the cylinder.  The frame is flared out in the back to keep the cartridges from sliding back out.

TTFN

RE: Ammunition Shell

(OP)
Thanks for the help.

RE: Ammunition Shell

Guys - the rim is for extraction. It only works for locating on a "Rimmed" cartridge [i.e. 38 special, 30-30 winchester] Look up "headspace" in a firearms dictionary.
"rimless" rounds {i.e. 30-06} locate on the shoulder.

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