Small Pistol Magnum (SPM)Primers
Small Pistol Magnum (SPM)SP = Small Pistol Primers | SPM = Small Pistol Magnum Primers | LP = Large Pistol Primers | LPM = Large Pistol Magnum Primers | SR = Small Rifle Primers | LR = Large Rifle Primers | LRM = Large Rifle Magnum Primers.
Below you find a table with some common calibers / cartridges which use Small Pistol Magnum (SPM) primers. Also find further below some common products in this primer size:
CCI No. 550 Small Pistol Magnum (SPM) Primers
Manufacturer number: No. 550
Common Cartridges using this Primer Size
| Cartridge | Bullet Diameter | Primer Size |
| 357 Magnum | 357 | SPM |
| 357 Maximum | 357 | SPM |