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Old 03-07-13, 01:07 PM   #1
Platapus
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Originally Posted by Sailor Steve View Post
I agree with Platapus. A simple cross-measure take with my pen shows it to be precisely 1/2", or .50 cal., or 12.5mm.
I do not think that word means what you think it means.

Lets hope not, as "precisely" the round should measure 12.95mm (0.51 inches) in diameter.

It is the gun that fires this round that is precisely 12.5mm in caliber not the other way around. (snicker)

It would be more correct to say that the bullet is approximately 12.5mm in diameter.

(and I wonder why I have not friends and no one likes to talk to me)

Hey! you think it is easy being a pompous prick? It takes years of practice.... alone.
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Old 03-07-13, 03:34 PM   #2
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Originally Posted by Platapus View Post
Lets hope not, as "precisely" the round should measure 12.95mm (0.51 inches) in diameter.
A 0.51" round wouldn't fit a 0.5" barrel. Perhaps you meant 0.49", or 12.45mm?

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Hey! you think it is easy being a pompous prick? It takes years of practice.... alone.
And a few more years to get it right.
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Old 03-07-13, 05:02 PM   #3
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A 0.51" round wouldn't fit a 0.5" barrel. Perhaps you meant 0.49", or 12.45mm?
Actually it will fit quite nicely. With a little help from the propellent. A .50 cal gun barrel is 12.5 mm between the lands. The distance between the groves is closer to 12.95


As the 12.95 bullet is propelled through the slightly smaller 12.5 Land diameter, the lands cut into the bullet and impart the spin.

That's why a spent bullet has groves. The lands need to be of a slightly smaller diameter then the bullet. Other wise no rifling.
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Old 03-07-13, 05:16 PM   #4
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Well I'm certainly learning something here because my firearms instructor on MP5 training only ever fed me 'live' magazines.
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Old 03-07-13, 05:45 PM   #5
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How was the MP5 to shoot?
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Old 03-07-13, 06:24 PM   #6
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I've got a bunch of various military items.

I've got tons of bags...including a Helicopter Pilot's Helmet Bag....medic bags...and the big OD Duffle Bag.

I've also got a couple medals, tons of pins and patches, and a couple uniforms. I've got a British Army Desert Uniform, a US Army digital uniform, a Korean Snow Coat, and random other pieces of clothing.

I've also got the Uncut Version of the Documentary that the Discovery Channel did over the 2nd Bn. 27 Inf. Regiment (Wolfhounds) that my Uncle was deployed with. He is on the documentary at one point working on a soldier in the Aid Station. He was a Physician's Assistant I think. I can't exactly remember.

Oh....and I've got the memories of playing with the M1 Abrams and Stryker simulators at Fort Knox back when it was the Armor Center and my other uncle was in command. Talk about fun.... I did that Laser Marksmanship Training over there too.
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Old 03-08-13, 08:26 AM   #7
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Quote:
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How was the MP5 to shoot?
In all honesty....quite easy but that is probably because they were only semi automatic and you were trained to fire a maximum of two rounds only before shifting your position/stance and re-evaluating the hypothetical scenario you were expected to adhere to.
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