I happened across a very unique bullet and am wondering if anyone recognizes it. The shell has no markings on it but it is a bit larger than a .22. Any idea what this is for?

It's a 17-222 Rimmed Spear Chucker Short Mag.

I can’t believe the RSCSM didn’t catch on better. Shame too.

Yah, I read about it at Wolfe.

Is that lead or steel up front? Some kinda chambering thingy?

That's one of them cop killer bullets that were outlawed.

looks like a rivet driver

FMJ squirrel load.

.17 Screwdriver Rocket.

Thingy.

Looks like a round for some kind of power driver to me. I never saw one where the anchor was preloaded into a cartridge.

Most use a blank cartridge to drive the anchor.

Drives in then snaps off... Hmm. I could buy that. Maybe

Yep

Yeah, some sorta "ramset" thingy !

Relative of Minnie's.

8.5

Just à guess could it be used to find rifling lands for reloading. Does the top screw in and out? Or did you just make it to f with us haha

Pfft...

Easy one...

It’s a nail punch.

🦫

Never been used.

It's likely worth three times what it was 1.5 years.

I can live with that.

Like Lake Woebegon. Above average!

I believe this cartridge was invented to stop Marine Corps DI should one ever go rogue.