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.50 M48A1 Spotter Round.


earlymb
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Hi all,

 

does anyone know what weapon uses this half length .50 cartridge? On the left is a standard .50 for comparison.

 

huls001.th.jpg huls002.th.jpg

 

Recoiless rifle spotter gun, sniper rifle, something else?

 

Greetz ;)

 

David

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I'm not familiar with the headstamp, but it looks like it is a .50 cal Spotter Round as used on the 106mm recoiless rifles

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Thanks for your replies, I found this on the firearmstalkforum:

 

Head stamp LC 68 IIRC, is a 50 cal spotter-tracer, M48A1 that is fired from a M8C Spotting rifle mounted on top of a 106mm recoiless BAT cannon.

 

It is smaller than the 50 BMG and matches the trajectory of the BAT to target impact. The bullet has a primer in the tip to ignite a smoke spotter on impact and a tracer cup in the rear to produce a tracer out to 1500 yds.

 

ebf1755bcbe9eae29cfaeac693b3019c.jpg

 

So it seems it was indeed a RR spotter rifle round. Anyone knows the headstamp? I presume the '66' is 1966?

 

Greetz ;)

 

David

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  • 1 year later...

That is a shell casing for the 106mm Recoilless Rifle. The small .50 round shown at the top is the casing of the spotter rifle.

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The .50 spotter round was designed to duplicate the ballistic profile of the main gun 106mm projectile. Before firing The Big One, teh gunner shot the target with the spotter, which when it hit emitted a puff of white smoke/chalk dust. From that the gunner could correct a bit before (QUICKLY QUICKLY) punching the The Big One.

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El Bibliotecario

There is a subcaliber device for the 106mm recoiless rifle, which has the exterior dimensions of 106mm case, chambers like the 106mm case, and is fired like the main gun, but contains a barrel chambered for the standard .30 rifle round. Training with this combination was an underwhelming experience. While I knew the ballistics of the spotter round supposedly matched the 106mm round, it always baffled me how the ballistics of the .30 round were supposed to match that of the 106mm round.

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  • 3 months later...
I am still confused with this casing. What is the purpose of the second hole in the bottom of the casing? How was it used?

Dan H

 

 

This case was used with the fin-stabilized HEAT projectle. The base and fins protrude 10" or 12" into the cartridge case which made loading of the propellant difficult. So they made a loading hole in the base to introduce the powder pellets after the projectile was crimped in at the case mouth.

 

Rick

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post-3538-1328230304.jpg Here's what the spotter round package look's like. MB the contents would look similar to the pictures you found on the web. There is a perfuration line around the middle of the whole box so the top could be torn off & then sat into a tray. I've seen pretty good file footage of these being used in Vietnam with our tanks.
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