Cartridge Identification-Shotshell

Been trying to find out if anybody knows anything about this cartridge.

Jim, JP & Patrick have given some very useful information but I am still trying to find out who it was made for?

It probably has been reloaded or an NPE load, so I do not trust the OSC. I have searched on the logo but not found anything that I think is helpful.

Any help would be well appreciated.


Hi Mike,

Good Luck!!
I have the exact same cartridge with exact the same questions.

Would like to hear any info known about it.

regards rené

Hi Mike,
Found out it was made by SFM.
started in 1913.

regards rené

Hi Rene,

Thanks for that.


But who is LBL ???
Surely a British gunsmith, but who ??


I do not have proof but the headstamp and casings I have (given to me by another) has this listed as SFM made for Linsley Brothers, Leeds, UK. They mainly used Kynoch to manufacture their shells…but who knows…maybe they used SFM as well.

I personally do not think it is a Linsley Brothers cartridge. I checked back through the cartridge name lists I have and no mention is made of the brand name Rapid being associated with Linsley. Also I have never seen limited abbreviated to just an “L”. Another point worthy of note is that of all the cartridges and information I have on them they are always referred to as Linsley Brothers, never Linsley Brothers Limited, to me that pretty much rules out it being short for “Limited”. As for it standing for Leeds I somehow doubt it, never seen Leeds substituted to just an “L”.

Added a few known Linsley Head Stamps, as can be seen the name and city are always spelt in full with just the brothers being shortened to Bros.

Hard call but I have asked others and got back a bland “no”. So unless somebody turns up a box with some more information on I guess we won’t know for sure.


Hi, I found about a dozen of these bullets whilst I was metal detecting a dried out lake on the grounds of a large house that was used as a military hospital during world war 1.
I was wondering if anyone on your forum could identify them for me. Are they from the great war or are they modern? What type of gun would have fired them, maybe a pistol of some sort? I have posted some photographs and will give you some dimensions.

Kind regards,
Danny Jones

Bullet size .450
Casing diameter.475
Overall length.1.250
Lip length (head stamp end) .530
Casing length .750
All sizes are appropriate but measured with a verbier caliper


Welcome to the forum .
You really ought to start a new post as this .455 Mk II Cordite revolver by Royal Labs has nothing to do with the original post.