The .357 Magnum cartridge is based upon Smith & Wesson’s earlier .38 Special cartridge. It was introduced in 1935, and its use has since become widespread.
This cartridge is notable for its highly effective terminal ballistics.
It is still used today in various countries. Most commonly in revolvers.
The .357 in the UK
With handguns banned in Britain since 1997, most UK shooters know the .357 Magnum from lever-action and pistol-calibre carbines on gallery rifle ranges, where it is one of the most popular calibres. Those rifles will also fire the shorter .38 Special.
Ring or Inert Round
- 25mm split ring – ready for your keys
- Inert round – no attachment, for display
Each one starts as a once-fired .357 Magnum brass case, resized to full length with a seated bullet.
Engraved .357 Designs
- “Six shots… or only five?” – inspired by Dirty Harry
- “357 reasons to behave” – with a dry sense of humour
Related rounds: the shorter .38 Special, and the .357 SIG pistol round, which shares the name but not the case.
.357 Magnum Bullet Keyring | Real Bullet Keychain
FAQ
Q: Is it a real .357 Magnum? Yes – a genuine once-fired .357 Magnum brass case with a seated bullet. Not a replica.
Q: Is it the same as the .357 SIG? No – the .357 SIG is a bottlenecked pistol round. The .357 Magnum is a longer, rimmed revolver round.
Q: Is it safe to carry? Yes. It is fully inert and legal to own and carry in the UK without a licence. Always check with your airline before travelling abroad with this item.
Q: Ring or inert round? The ring version goes on your keys; the inert round has no attachment and is for display.
Q: Can I have it engraved? Yes – see our laser engraving page, or choose one of the engraved designs above.
Q: How big is it? About 40 mm long – see the Additional information tab for full specifications.










