Question: 1911 45 how many rounds?
Answer: The original 1911 held seven rounds of 45 ACP ammo in its detachable single stack magazine. Since that time, eight round ammunition magazines for 45 ACP have become commonplace, and 1911s have been chambered in a number of other ammo types, including 38 super, 9 mm, 40 Smith & Wesson, and 22 long rifle.