OMFG That's waaaaay too overpowered!
Looks like a lasgun set to extremly high power (read: extreme energy consumption) fired continously. I guess your attempts to balance it (low ammo and no pickup) are realistic then, but not the fact that you can't pick it up again (something that bugs me alot with some of the shogun weapons in darkstorm). Decrease it's power and make it possible to pick it up again, and I'd say you've got a good digger, with a high price for futher balancing.

Shorten the range and change "Fire Puff Large" with "Fire Puff Medium" or something.

The thing is that I really can't make it any weaker, because using it to dig tunnels is already annoying as hell, since the particles often miss a few lines of dirt, and you have to wait for a reload before you can clean them up. But I'll try to do what Roon suggests; it can't be picked up, because then it would have GetsHitByMOs = 1, which would mean that it would be torn apart by it's own particles. And before anyone says that I should use FireIgnoresThis, that would be useless, since it shoots emitters that emit the uber-sharp MOPixels.

Negative sharpness works wonders, try it. (I don't know if it works in this build though)

Negative sharpness? Wouldn't that make (extremely) blunt particles?

Wait never mind, it works If I remember correctly it made particles ignore actors and stuff, now its just crazy. I think making the particles HitsMOs = 0 works as well.

But that would stop it from killing doors.

Well, um, I don't know then...

Is this better?
I'm thinking I should also cut it's ammo capacity in half.

Looks better, but a bit strange with the pointy end

Would you prefer this one?

Yeah, that's just weird. Try making it without the white centre either.

It's a laser. It wouldn't look like a hot beam of death without a white center, now wouldn't it?

I meant it for the pointy laser. But without the point it's better with the white.

Like this?