Unknown cartridge ID help

[NINEROUND]

My boss gave me some old cartridges he found out in a garage somewhere and among them was the one in the pictures below. No markings and looks like a rim fire to me. It’s pictured next to a .38 S&W for comparison. Possibly a revolver round since it’s rimmed? Anybody know what this thing is?

 

[Merlin762]

My boss gave me some old cartridges he found out in a garage somewhere and among them was the one in the pictures below. No markings and looks like a rim fire to me. It’s pictured next to a .38 S&W for comparison. Possibly a revolver round since it’s rimmed? Anybody know what this thing is?

It looks like a horizontal pin fire round. Probably 32 or 38 cal.

 

[MacFromOK]

It looks like a horizontal pin fire round. Probably 32 or 38 cal.

Don't pin-fire rounds have an actual pin on the side?

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[mr ed]

Winner! Horizontal pinfire
What does he win?

 

[JEVapa]

Kinda looks like a Benet primed round without the crimps in the case.

 

[NINEROUND]

There is no place for a pin anywhere around the base of the casing itself. I’ll put calipers to it later and get some dimensions. Just guessing, I’d say 7.5 or 8mm bullet?

 

[NINEROUND]

31 GRN overall weight

8.5mm .33cal

21.5 case length
The projectile? is very hard, not lead. Maybe steel or aluminum. The cartridge will fit in a .38/357 cylinder and rotate through the action being turned. The dot in the center of the base lines up with the firing pin. I tried to use a bullet puller and disassemble the thing, but no dice. I tried a few good smacks on concrete but it didn’t budge. I’m thinking at this point it may not be a cartridge at all. Maybe a toy bullet from some long lost 60’s era play set.

 

[MacFromOK]

Hacksaw time?

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[Snattlerake]

6 Vintage 1950s Mattel All Metal Play Bullets for Winchester Saddle Gun, Fanner 50, & Other Toy Cap Guns
Look familiar?

 

[NINEROUND]

Very similar…might have to hacksaw on it and see what’s in there.