WMR - 22" MAGNUM - More Accepted .. Shortly:

The .22" Magnum 5.6x27 mmR  is a most useful round. - Some shootists comment that it doesn't particularly excel at pinpoint bull's-eye## target accuracy - but it does stretch out the power and range of an easy-shooting lightweight hunting tool in a very usable way .. An overnight success after sixty years?

## This looseness claim from the early days may have been due to it's transonic-supersonic nature?

My earlier WMR blog suggests that a WMR rifle makes a great survival tool:   https://flicense.blogspot.com/2014/04/22-wmr-rimfire-magnum-useful.html

If you want a most useful pea rifle survival tool that works with thin-skinned animals .. the WMR could well be tops - except that it's little brother two-two rim-fire is also very useful at slightly shorter ranges, can be subsonic-silenced & at lower prices.

The fashion for rubbishing smaller calibers is fading somewhat lately under the bright sunshine of fact - and there are a few gun makers showing good sense and starting to cater for users needs.
But ..

Kel-Tec 4.3 inch Barrel And THIRTY Round Magazines:

Standard Manufacturing S333. 2 Barrels, 2 Holes, 2 Fingers, 22 WMR - 1.25 inch Barrel:

These two very interesting and innovative tools are short barreled and if you take a look at BBTI's site they list useful performance figures for the common calibers working from long and shortened barrels .. Ballistics By The Inch:  

  http://ballisticsbytheinch.com/index.html

At a quick glance BBTI's tables don't go as low as one inch barrel length .. but at two inches the lowly .22" rim-fire is moving just about as smartly as the WMR. - BOTH are at around 900 foot per second.

The WMR needs more barrel time to accelerate to it's Magnum velocities. There are many brands with different variable options - but it seems that the WMR loses it's advantage over long rifle rounds in short barrels below three inches.

Eighteen inch barrels seem to lift the WMR to it's best velocities at around 2,300 feet per second ..

From the Kel-Tec' PMR-30's four inches the WMR is leaving home at around 1,400 f/sec whereas a 22" long rifle would be lagging-back at around 1,000 f/sec.

The Standard Manufacturing S333 Volleyfire is a clever two-at-a-time idea chambered in .22 Magnum - even at under 900 feet per second - four sets of two WMR slugs are going to hurt .. but I get the feeling that they aren't doing anything much more than four sets of 2x two-two rim-fire could match from that stumpy one inch length (except for the noise level). - a couple of extra inches might make all the difference .. well at least an extra 100 ft/sec extra - they'll be loud but.

But to date nobody seems to have actually bought one and video gel-tested it over a chronograph on range - maybe they don't reliably go   B'Bang  yet?

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I have spotted multiple references to a blow-back WMR caliber 'EDDA' Sub-Machine Gun made in ARGENTINA. - Nobody seems to know anything about this arm other than it using a 30 round box magazine ..it seems so mysterious that there are no reliable images. 

Marty K.
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