| Code Value |
Definition |
| 10 | 10 MM, .40 S&W PISTOL CARTRIDGES; ALSO USED FOR 10 GAUGE SHOTGUN |
| 11 | 11 MM MAUSER |
| 12 | 12.5 MM IS METRIC FOR .50-CALIBER BROWNING MACHINE GUN ROUND; ALSO USED FOR 12 GAUGE SHOTGUN |
| 13 | 13 MM GYROJET ROCKET PISTOL/CARBINE |
| 14 | .14 WALKER HORNET, 14/221, 14-222 |
| 16 | 16 GAUGE SHOTGUN |
| 17 | .17 REMINGTON |
| 177 | .177 CALIBER (.17 CALIBER) IS MOST OFTEN USED IN AIRGUNS |
| 20 | 20 GAUGE SHOTGUN |
| 204 | .204 RUGER, REMINGTON, SAVAGE |
| 22 | .22 SHORT/LONG/LONG RIFLE RIMFIRE CARTRIDGE FAMILY; ALSO .22 HORNET, .22-250, .220 SWIFT, .222 REMINGTON, .223 REMINGTON, 22 CALIBER SMOOTHBORE, ETC. |
| 221 | .221 REMINGTON FIREBALL |
| 222 | .222 REMINGTON, .222 REMINGTON MAGNUM |
| 223 | .223 REMINGTON/5.56X45 MM NATO |
| 24 | 24 GAUGE SHOTGUN |
| 243 | .243 WINCHESTER |
| 25 | .25 ACP, .25-06, .25-20, .25-35, .250-3000 SAVAGE, ETC. |
| 250 | .250-3000 SAVAGE |
| 256 | .256 NEWTON |
| 257 | .257 ROBERTS, .257 WEATHERBY MAGNUM |
| 260 | .260 MAGNUM RESEARCH LONE EAGLE, .260 REMINGTON MODEL XP 100, .260 SAVAGE STRIKER, .260 THOMPSON/CENTER ENCORE |
| 264 | .264 WINCHESTER MAGNUM |
| 270 | .270 WINCHESTER, .270 WEATHERBY MAGNUM |
| 28 | 28 GAUGE SHOTGUN |
| 280 | .280 REMINGTON/7 MM EXPRESS |
| 284 | .284 WINCHESTER |
| 30 | .30 M1 CARBINE, .30-40 KRAG, .30-30 WINCHESTER |
| 300 | .300 WINCHESTER MAGNUM, .300 WEATHERBY MAGNUM, .300 SAVAGE, .300 HOLLAND & HOLLAND MAGNUM |
| 3006 | .30-06 U.S. (.30 SPRINGFIELD) |
| 303 | .303 BRITISH, .303 SAVAGE |
| 308 | .308 WINCHESTER/7.62X51 MM NATO |
| 32 | .32 ACP, .32 SHORT COLT, .32 LONG COLT, .32 H&R MAGNUM |
| 3220 | .32-20 WINCHESTER |
| 327 | .327 FEDERAL MAGNUM CHARGE |
| 338 | .338 WINCHESTER MAGNUM |
| 340 | .340 WEATHERBY MAGNUM |
| 35 | .35 WHELEN, .35 REMINGTON, .350 REMINGTON MAGNUM |
| 351 | .351 WINCHESTER |
| 357 | .357 REMINGTON MAGNUM, .357 MAXIMUM, .357 AUTOMAG |
| 36 | .36 CALIBER MARKINGS NORMALLY FOUND ONLY ON BLACK-POWDER FIREARMS |
| 375 | .375 HOLLAND & HOLLAND MAGNUM, .375 WINCHESTER |
| 38 | .38 S&W, .38 (S&W) SPECIAL, .38 ACP, .38 SUPER, ETC. |
| 380 | .380 ACP IN U.S.; ALSO KNOWN IN EUROPE AS THE 9 MM KURZ/CORTO/SHORT, AND THE 9X17 |
| 4 | 4 GAUGE SHOTGUN |
| 40 | .40 S&W, 10 MM |
| 401 | .401 WINCHESTER |
| 405 | .405 WINCHESTER |
| 41 | .41 SHORT RIMFIRE, .41 REMINGTON MAGNUM, .41 ACTION EXPRESS, .41 AUTOMAG |
| 410 | .410 GAUGE SHOTGUN |
| 44 | .44-40 WINCHESTER, .44 RUSSIAN, .44 SPECIAL, .44 REMINGTON MAGNUM, .44 AUTOMAG; ALSO USED IN BLACK-POWDER FIREARMS |
| 444 | .444 MARLIN |
| 45 | .45 ACP, .455 WEBLEY, .45 AUTORIM, .45 LONG COLT, .45 WINCHESTER MAGNUM |
| 454 | .454 CASULL-RAGIN BULL MODEL |
| 455 | .455 WEBLEY OR .455 MANSTOPPER |
| 4570 | .45-70 U.S. GOVERNMENT |
| 458 | .458 WINCHESTER MAGNUM |
| 460 | .460 WEATHERBY MAGNUM |
| 50 | .50 BROWNING MACHINE GUN, .50 ACTION EXPRESS; ALSO USED IN BLACK-POWDER FIREARMS |
| 54 | TYPICALLY USED IN BLACK-POWDER FIREARMS |
| 556 | 5.56X45 MM NATO/.223 REMINGTON |
| 58 | TYPICALLY USED IN BLACK-POWDER FIREARMS; ALSO .577 NITRO EXPRESS ELEPHANT GUN |
| 6 | 6MM REMINGTON, .243 WINCHESTER, .240 WEATHERBY MAGNUM |
| 60 | TYPICALLY USED IN BLACK-POWDER FIREARMS; ALSO THE .600 NITRO EXPRESS ELEPHANT GUN |
| 635 | 6.35 MM/.25 ACP |
| 65 | 6.5 MM CARCANO; MAY ALSO APPEAR AS .65 CALIBER ON BLACK-POWDER FIREARMS |
| 7 | 7MM REMINGTON MAGNUM, 7MM BENCH REST, 7MM-08, 7MM WEATHERBY MAGNUM, 7X57 MAUSER, 7.7 ARISAKA, .280 REMINGTON ETC |
| 735 | 7.35 MM/.32 ACP |
| 75 | COULD EITHER BE A METRIC CALIBER (7.5 MM) OR A .75 CALIBER. USE THE MIS FIELD TO FURTHER CLARIFY. |
| 762 | 7.62X39 SOVIET, 7.62X51 NATO/.308 WINCHESTER, 7.62X54R USED IN RUSSIAN MOISIN-NAGANT AND DRAGUNOV RIFLES |
| 763 | 7.63 MM/.30 MAUSER, 7.62 MM TOKAREV |
| 765 | 7.65 MM LUGER/.30 LUGER |
| 8 | 8X57 MAUSER, 8MM LEBEL, 8MM REMINGTON MAGNUM |
| 9 | 9MM LUGER/PARABELLUM/9X19, 9MM KURZ/CORTO/9X17 (.380ACP), 9MM WINCHESATER MAGNUM, 9MM BROWNING LONG, 9MM STEYR, 9MM BERGMAN-BAYARD, 9MM MAKAROV/9X18, 9X21, 9X23 ETC |
| 9999 | USED FOR GRENADE LAUNCHERS AND GUNS THAT FIRE ELECTRICALLY CHARGED DARTS. |