8MM Rimfire shotgun shell **Photos added**

A friend of mine recently acquired a single shot shotgun chambered in 8mm
It shoots an all brass rimfire 8mm crimped shell.
This is the first I have heard of this round.
I was able to acquire a few rounds of the ammo from him.
Anyone have history on this round?
Tom

Hi Tom, it was designed by Remington for clay target shooting at 15 yards oriented to unexperienced public and both the shotgun, cartridge and shooting range were named “310 Skeet”. The shotgun was made by CBC in Brazil, who also made some the rounds and named them with several names like “8 mm CBC”, “8 mm (.310) para espingarda” and “8 mm (.310”) Skeet”. The round is based on the .32 Long Rimfire case.

Thanks for the info.
The box of shells is Yellow/Blue and made by CBC, see photos.
I also included a photo of the instruction manual for the special clay thrower that was developed for this purpose.
The owner of the shells also has the rifle and the thrower…a very nice package!
Tom


Tom, that’s a nice “Expresso” box and also exist in .22 LR shot. The Portuguese word for “Trap Shooting” is “Tiro Expresso”.

This is the CBC Mini-Skeet set:

That is exactly the package that my friend just purchased
He has all the items you show and abot 5 boxes of shells
Does anyone still manufacture these guns or ammo??
Tom

Tom, I think that the remaining stock of these CBC Mini-Skeet packages was imported by Navy Arms in the 1980’s, which also offered .310 cartridges specially made for them with “V” headstamp. My last CBC catalog offering this cartridge is dated 1986.

Here are some photos of the CBC cartridges:
Curious if these would work in a .32 Rimfire revolver? Not that I plan to try it!


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Can you post photos of the cartridges and headstamps?

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The Remington box (sealed). These should have a U headstamp, Also known by Remington are bronze’d-brass case finish, unheadstamped, dummy & case mouth crimp variations (roll w/ topwad & multi-petal.

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CBC made 310 Skeet with both clear plastic wad rolled crimp and 8 petal star crimps.


310 CBC

Paul

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Here is a 310 Proof load.with 6 petal star crimp.
310 Skeet proof HS
310 Skeet proof

310 “U” headstamp dummy.6 petal star crimp

Navy Arms 310 with 8 petal crimp.
310 V HS

Like Pete said Remington made 310’s with petal crimps and roll crimps with both clear plastic was and yellow paper wads. They also used both a “U” headstamp and a U with a dot in the center.
.


Weight of the Remington 310’s range from 90 to 103 grains (different shot size?).
There is also a copper case unheadstamped 6 petal crimp loading.

Paul