Baby ballistics

The well-known instigator Tam has me sweeping brass from the living room floor -- .22 Super Colibri brass, to be exact. It is a way passing a few moments of dull winter.

As promised, I dug out the box I thought I'd filed in the "Miscellaneous" corner.

(There are four corners in this gun room. They are labeled "Will shoot," "Won't shoot," "Miscellaneous," and "Other."  But I digress.)

I stuck one in the BL22, stepped to the deck, and let fly. Of such simplicity is fun created.

The Colibiri descends from the old BB and CB short "caps" for .22 rimfires. It's purpose in life is shooting in places where conventional wisdom,  and sometimes the law, say there should be none. 

It looks a lot like the defunct .22 Long -- a Long Rifle case stuffed with a 29-grain bullet. The small difference is that the Colibiri uses a 20-grainer.  The big one is that there's no powder behind the bullet, just a hot priming compound giving you about 500 fps, a low pop instead of a bang, limited range and penetration. However, my lashup buried the bullet to its depth in soft wood 30 feet away, so the Four Rules apply.
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The North Wind doth blow, so I plot for comfort. I will block the front doors open,  fire out the door, over the deck, across some 20 feet of drifted back yard, into a target, using the  shed as a berm.

The  target? One of those ridiculous little shovels with a four-inch blade and a foot-long handle, sold in better WalMarts everywhere as "roadside emergency tools."  (I gaze at it and  speculate on my probable need, to, some day,  inter a small budgie bird, at roadside, in an emergency setting, in soft earth. More is beyond its capacity. But I digress. )

Ram the handle into the snow and the blade makes a nice aiming point. Hit it and it moves a little.  I make it move 20 times or so, bare-handed and bare-headed in January. Grinning all the way, even at something like eight cents a round, counting the tax.

I can't really comment on accuracy other than that, offhand, I got consistent minute-of-useless-shovel groups according to my examination of the hit marks -- faint smudges of lead.

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The Calibiri, left, next to a .22 Long Rifle.

The box warns that you should fire these rounds only through a hand gun because, it says, the charge may fail to drive the bullet all the way through the rifle barrel. Then, if you fire a full-power round behind it you'll wind up with Elmer Fudd's barrel  after the wabbit stuck his finger in the muzzle.  I report this at the command of the TMR Legal Review Section.