40mm bofors?

[Spaceinvader]

Hello everyone!
I got to go to a gun and military show today, not much, very tiny, but I did get a few rifle rounds, and this interesting casing. I got it for 25$, and I instantly knew it was a 40mm, but it looked to small. There is no markings on the case except for an "I" or a "1" (depending on how you look at it) on the base. No primer either. The casing is much smaller than a typical 40mm bofors round, and the base rim not as thick, and smaller too. Mouth size is definitely 40mm. Im hoping someone knows what it is. Anything welcome, thanks!
Rhys

 

[celica]

Could it be a 40mm Bofors L60 they are shorter and have a thinner base. What are the dimensions?

 

[Spaceinvader]

The one I have it pictured with is an L/60, so its not an L/70. Let me get some measurements and I will post again.

 

[Spaceinvader]

The base is 6cm in diameter, and the rim is 7mm thick. The casing is 31cm long. If there is any other measurements you need just tell me!

 

[SG500]

I'm fairly sure the one on the left is a Bofors L/70. Case length 365mm and rim diameter 64.8mm. The one on the right is a Bofors L/60. Case length 311mm and rim diameter 61.7mm.

Dave.

 

[Spaceinvader]

Hmmm, alright. interesting. Either way, a piece I didnt have!

 

[Spaceinvader]

Oh, one last thing, why doesn't it have any markings?