What is the difference between 38 special and 45ACP ammunition

The .38 Special vs. the 9mm: Which Gun Caliber Is Superior?

Was the M3 grease gun copied from MP40, or is the similar silhouette just a coincidence? - Quora

Choice Ammunition Cowboy Choice 38 Special 105gr Rifle Ammo - 50 Rounds

38 Special vs 9mm - What Does Each Caliber Offer?

9mm vs 38 Special

Why does the military use full metal jacket ammunition instead of solid steel ammunition? - Quora

38 Super vs. 45 ACP - A Pistol Caliber Comparison

Why To Consider The .38 Super For Self-Defense

Was the M3 grease gun copied from MP40, or is the similar silhouette just a coincidence? - Quora

Which gun is better to carry: a .45 or .38 caliber? - Quora