View Full Version : I do not understand the different types of ammo...

Danz la Nuit
05-26-2012, 9:16 AM
So I am preparing to purchase a decent amount of .45 for my first pistol (1911 Sig. 45)

When I go to the various ammo websites there are many different options...



.45 ACP

.45 COLT

.45 GAP


05-26-2012, 9:17 AM
Your 1911 eats 45 ACP (45 auto)

.45 GAP = Glock (specifically .45 GAP glocks, there are plenty of .45 ACP glocks as well)
.45 Colt = revolvers and rifles

If this is wrong someone will chime in and slap me down in no time :)

05-26-2012, 9:20 AM
The 1911 Sig Sauer will shoot .45 ACP ONLY. The .45 Colt or .45 Long Colt is for lever action rifles and revolvers. I'm not 100% sure what .45 gap should be shot out of. Someone else may post up an answer to that.

Mossy Man
05-26-2012, 9:34 AM
.45 Glock Automatic Pistol

Basically it was glock's version of .45

wikipedia is pretty good info btw

05-26-2012, 10:39 AM
Pictures ususally help:
http://t1.gstatic.com/images?q=tbn:ANd9GcQ3oE4uvear5TYHuuCUvZVjflzsN2AbO EccAfw_l2nabjwfzjfwQsEnG3-5AQ

Wikipedia should help take care of the rest:
http://en.wikipedia.org/wiki/.45_ACP - .45 caliber Automatic Colt Pistol (ACP) cartridge
http://en.wikipedia.org/wiki/.45_Colt - .45 caliber "Long Colt" (LC) cartridge
http://en.wikipedia.org/wiki/.45_GAP - .45 caliber Glock Automatic Pistol (GAP) cartridge


05-26-2012, 10:40 AM
OP, you made the wise choice and asked the question.

Using the number by itself is like going to a tire store and telling them "I need a tire for an 18 inch wheel". There are many factors that affect the right tire choice ... and ammunition. Similar to tire choices, the fact that a round fits in the gun is no guarantee you made the right choice.

Know the gun, know the caliber, and when using new ammo, check it carefully. There are many stories of people using the wrong ammo, it fit, they fired, and either something "funny" happened (different feel, different sound) or the gun blew up.

05-26-2012, 11:10 AM
SGammo.com has good prices on .45 just took delivery on 1k of federal 230gr ball, which is what the 1911 was designed around.