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Old 05-20-2017, 09:18 AM   #71
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Very good, sir! From L to R- standard 45 ACP, 45 Metal Piercing, 45 shot cartridge, and on the right, 45 Remington Thompson. That was only loaded for a few years- made too long to fit in a handgun, it used a special mag on a Thompson SMG.

The rating from a 12 inch SMG barrel was 1,050ft lbs of energy. No, not a typo. I have one round of the R-T ammo.
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Old 05-27-2017, 02:25 AM   #72
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Quote:
Originally Posted by Rex in OTZ View Post
Here is another caseless cartridge . . . . . Well mostly caseless.
What could it be?
What weapon was it fired from?
About what time frame?
"925 mm AUPO semi-caseless" The AUPO round was "semi-caseless" because the hollow base of the bullet detached from the bullet itself after firing. However, it was not necessary to eject it from the side of the weapon as in a normal cartridge, because the base followed the bullet down the barrel and exited at the muzzle, in a similar fashion to a sabot.

http://www.municion.org/Aupo/Aupo.htm

http://modernfirearms.net/smg/it/benelli-cb-m2-e.html

Benelli CB-M2 weapon was chambered for the semi-caseless*9mm AUPO round.

https://en.m.wikipedia.org/wiki/Benelli_CB_M2

1980's *Benelli CB-M2*was a unique*submachine gun*of Italian conception resulting from a joint venture between*Benelli*and*Fiocchi Munizioni, the biggest ammunition manufacturer of*Italy. The weapon was operated by a simple*blowback*system, which is very common for submachine guns. The unusual aspect of the weapon was the round itself.
File Type: jpeg 2017-05-26-18-10-47--1857031065.jpeg (3.9 KB, 10 views)
File Type: jpeg images.jpeg (10.0 KB, 10 views)
File Type: jpeg images-2.jpeg (8.6 KB, 10 views)
File Type: jpg benelli_cb-m2_2.jpg (11.2 KB, 10 views)
File Type: jpg benelli_cb-m2_p.jpg (31.1 KB, 10 views)
File Type: jpg benelli_cb-m2_1.jpg (34.4 KB, 10 views)

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Old 05-27-2017, 04:26 AM   #73
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Here is an interesting 7.62 round. Great idea- but did not work quite the way it was planned. This round carried an X designation and was never adopted by the military.

7.62 slap.jpg

Any insight on why it was not adopted?
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Old 05-27-2017, 09:56 AM   #74
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Originally Posted by c3shooter View Post
Here is an interesting 7.62 round. Great idea- but did not work quite the way it was planned. This round carried an X designation and was never adopted by the military.

Attachment 173115

Any insight on why it was not adopted?
Was it called SLAP, kind of like the Remington Accelerators
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Old 05-27-2017, 11:38 AM   #75
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That indeed was the Saboted Light Armor Penetrating (SLAP) cartridge. The .50 BMG round worked OK. That is a .223 tungsten penetrator riding in a plastic shoe- 4000 fps from the 7.62 NATO cartridge.

Unfortunately, on testing, some of the sabots failed as the round was going up the barrel, letting a VERY hard bullet turn sideways. Not good for the rifling. In a couple of cases, left thru the side of the barrel....
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