![What is the difference between .38 caliber and .380? (Mathematically, they're the same number) - Quora What is the difference between .38 caliber and .380? (Mathematically, they're the same number) - Quora](https://qph.cf2.quoracdn.net/main-qimg-6cbf0ef6bd65f00984010865b7686654.webp)
What is the difference between .38 caliber and .380? (Mathematically, they're the same number) - Quora
![A Colt model 1902 (Sporting) Automatic Pistol, cal..38 ACP, no. 6033. Matt bore, barrel length 6", may be improved by careful cleaning. 7-shot. Manufactured in 1903. On both sides of the slide A Colt model 1902 (Sporting) Automatic Pistol, cal..38 ACP, no. 6033. Matt bore, barrel length 6", may be improved by careful cleaning. 7-shot. Manufactured in 1903. On both sides of the slide](https://c8.alamy.com/comp/BR6TM1/a-colt-model-1902-sporting-automatic-pistol-cal38-acp-no-6033-matt-BR6TM1.jpg)
A Colt model 1902 (Sporting) Automatic Pistol, cal..38 ACP, no. 6033. Matt bore, barrel length 6", may be improved by careful cleaning. 7-shot. Manufactured in 1903. On both sides of the slide
![A Colt model 1902 (sporting) automatic pistol, cal..38 ACP, no. 10606. Mirror-like bore, length 6". 7-shot. Manufactured in 1907. Left and right on slide standard inscription of that serial number section. Original A Colt model 1902 (sporting) automatic pistol, cal..38 ACP, no. 10606. Mirror-like bore, length 6". 7-shot. Manufactured in 1907. Left and right on slide standard inscription of that serial number section. Original](https://c8.alamy.com/comp/T3JDT2/a-colt-model-1902-sporting-automatic-pistol-cal38-acp-no-10606-mirror-like-bore-length-6-7-shot-manufactured-in-1907-left-and-right-on-slide-standard-inscription-of-that-serial-number-section-original-colt-blue-black-high-gloss-finish-with-light-wear-marks-on-edges-left-slide-side-partially-slightly-spotty-right-side-just-fine-colour-case-hardened-hammer-flawless-black-and-decorative-hard-rubber-grip-panels-carrying-rampant-colt-and-colt-a-rare-collectors-item-in-very-good-condition-total-manufacture-of-only-7500-weapons-t-additional-rights-clearance-info-not-available-T3JDT2.jpg)