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Posted: 7/2/2015 7:12:53 AM EDT
Obviously small arms aren't going to do much to a tank, but if one were to hit the exact same spot over and over again, eventually it would have to weaken and give way.  I know there was a .22 SMG based on that principle, the American 180.  It had a 180 round magazine and shot at 1200 RPM, the idea being that enough hits would weaken body armor to the point where it could be penetrated. I don't know how effective it was, but I thought it was an interesting concept, and I wonder how it would fare if scaled up a bit.  If you had an infinite supply of ammo and always hit the same spot on the tank, how much M855 it would take before it finally penetrated.  5,000?  10,000?  100,000?
Link Posted: 7/2/2015 7:14:24 AM EDT
[#1]
Link Posted: 7/2/2015 7:14:28 AM EDT
[#2]
M855 hitting the same spot
Link Posted: 7/2/2015 7:15:36 AM EDT
[#3]
All of them
Link Posted: 7/2/2015 7:16:16 AM EDT
[#4]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
All of them
View Quote




This
Link Posted: 7/2/2015 7:16:21 AM EDT
[#5]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
All of them
View Quote

Link Posted: 7/2/2015 7:16:33 AM EDT
[#6]
Is it on a treadmill ?
Link Posted: 7/2/2015 7:16:44 AM EDT
[#7]
Exactly 87.
Link Posted: 7/2/2015 7:18:38 AM EDT
[#8]
You'd be dead long before you came anywhere remotely close.
Link Posted: 7/2/2015 7:22:27 AM EDT
[#9]
I don't think it would ever penetrate. The steel is going to act entirely different than a Kevlar vest.
Link Posted: 7/2/2015 7:24:03 AM EDT
[#10]
well since there's layered DU in the armor, I would say never

Unless 855 had a DU tip then maybe
Link Posted: 7/2/2015 7:25:20 AM EDT
[#11]
It'd be interesting to see what a XM214 would do or possibly a Metal Storm.
Link Posted: 7/2/2015 7:25:20 AM EDT
[#12]
First Post and all that.

A MBT would literally rust into dust before a prairie dog round (or gazillions of them) would penetrate.
Link Posted: 7/2/2015 7:34:30 AM EDT
[#13]
Second post nails it lol
Link Posted: 7/2/2015 7:38:57 AM EDT
[#14]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
well since there's layered DU in the armor, I would say never

Unless 855 had a DU tip then maybe
View Quote


M1 armor is penetrated with tiny rubies all the time. It is cut with water jets propelling tiny rubies. I'd assume if the M855 cores were harder than the armor it would do the same with enough of them.
Link Posted: 7/2/2015 7:40:15 AM EDT
[#15]
I mean, I guess it could be possible, but I'd think it would take hundreds of thousands of them.
Link Posted: 7/2/2015 7:40:43 AM EDT
[#16]
Link Posted: 7/2/2015 7:46:43 AM EDT
[#17]
It would only take a few.  You would have to throw each one trillions of times however.
Link Posted: 7/2/2015 7:50:48 AM EDT
[#18]
I know there was a .22 SMG based on that principle, the American 180. It had a 180 round magazine and shot at 1200 RPM
View Quote


I can't help you on your original question, but I can tell you the American 180 was a badass little .22!  We had on in a Class 3 range I worked years ago, and it was an absolute hoot to play with, especially with quality HV ammo.  You could absolutely demolish a cinder block with on, and it wouldn't take long.
Link Posted: 7/2/2015 7:54:46 AM EDT
[#19]
How long would it take you to drink the ocean?
Link Posted: 7/2/2015 7:59:25 AM EDT
[#20]
With an infinite supply of ammo, and an infinite amount of time, I suspect that it would be more likely that the tank would turn into a small Abyssinian cat named Max before the armor was defeated by 5.56.
Link Posted: 7/2/2015 8:26:12 AM EDT
[#21]
what the hell...............In
Link Posted: 7/2/2015 8:28:49 AM EDT
[#22]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Is it on a treadmill ?
View Quote


No, but beans are involved.
Link Posted: 7/2/2015 8:29:32 AM EDT
[#23]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
M855 hitting the same spot
View Quote

This. Lol.
Link Posted: 7/2/2015 8:30:46 AM EDT
[#24]
Hammerm....

Wait...
Link Posted: 7/2/2015 8:33:22 AM EDT
[#25]
Your going to need a bunch of barrels, lol.
Link Posted: 7/2/2015 8:36:01 AM EDT
[#26]
are they Magic bullets?
Link Posted: 7/2/2015 8:36:39 AM EDT
[#27]
watched a haji shoot at an abrams with an AK in Fallujah........................it didn't work out for him
Link Posted: 7/2/2015 9:00:57 AM EDT
[#28]
Why you want to kill a Mercedes Benz Turbo bro

They are cool





Link Posted: 7/2/2015 9:04:13 AM EDT
[#29]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
watched a haji shoot at an abrams with an AK in Fallujah........................it didn't work out for him
View Quote

During Desert Storm the maqmood families would coming running at us throwing rocks the wemenz had basket s full

This was before ied's, thank God
Link Posted: 7/2/2015 9:05:58 AM EDT
[#30]

Discussion ForumsJump to Quoted PostQuote History
Quoted:


M855 hitting the same spot
View Quote






 
Link Posted: 7/2/2015 9:11:06 AM EDT
[#31]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
well since there's layered DU in the armor, I would say never

Unless 855 had a DU tip then maybe
View Quote


Water carved out the Grand Canyon so it is possible but it would take a staggering amount of M855 hitting the exact same spot.  For probably take days or weeks though.
Link Posted: 7/2/2015 9:21:17 AM EDT
[#32]
I had a guy with a PKM try this outside of Baghdad. My coax penetrated his helmet armor before he got through my turret armor. I would say 5.56 would basically just be peening the armor for me.
Link Posted: 7/2/2015 9:22:57 AM EDT
[#33]
Discussion ForumsJump to Quoted PostQuote History
Quoted:


Water carved out the Grand Canyon so it is possible but it would take a staggering amount of M855 hitting the exact same spot.  For probably take days or weeks though.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Quoted:
well since there's layered DU in the armor, I would say never

Unless 855 had a DU tip then maybe


Water carved out the Grand Canyon so it is possible but it would take a staggering amount of M855 hitting the exact same spot.  For probably take days or weeks though.


That's what I was about to post...
Link Posted: 7/2/2015 9:23:11 AM EDT
[#34]
Gotta be some serious jackhammer for that I bet.
Link Posted: 7/2/2015 9:24:06 AM EDT
[#35]
FPNI.
Link Posted: 7/2/2015 9:25:16 AM EDT
[#36]
I don't know, but an old friend had an interesting story. Growing up in North California he had an M1 carbine purchased out of the Sears catalog. And cases of surplus ammo. He and his buddies found an abandoned railroad tunnel, sealed off with concrete. They proceeded to shoot a hole in the concrete. They would shoot a while til the gun was too hot to hold, pour water on it, and keep shooting. About a case of ammo got them a hole big enough to crawl through.
Link Posted: 7/2/2015 9:26:35 AM EDT
[#37]
I think part of the problem is once you have quite a few rounds on top of each-other, they will eventually start to become counter productive as you would be essentially packing the wound with more hardened steel.
Link Posted: 7/2/2015 9:31:13 AM EDT
[#38]
Face palm...
Link Posted: 7/2/2015 9:36:18 AM EDT
[#39]
A lot.

For the people saying an infinite amount.  Rain water and wind eventually erodes the tallest mountains.  I imagine eventually the armor would be penetrated, although I bet the heat build up would be the culprit if the fire was constant and not erosion.
Link Posted: 7/2/2015 9:44:21 AM EDT
[#40]
Molotov cocktail would work faster
Link Posted: 7/2/2015 9:53:17 AM EDT
[#41]
As much as it would take to get an AT 4 from a nearby infantry guy. Good luck with that, you're gonna need to bring lots of friends.
Link Posted: 7/2/2015 9:54:40 AM EDT
[#42]
This is silly mental masturbation
Link Posted: 7/2/2015 10:06:33 AM EDT
[#43]
I work at 50 yard indoor range.

Our angled steel backstop has seen millions and millions of rounds. There are not even dimples in the steel. We don't allow steel core, but plenty gets shot at it anyway before we stop it. We don't allow it because it hurts the snail drum collector. Not the actual backstop. That slanted steel does not care. Even steel core 7.62x54 just sparks a lot. Not so much as a dent.

I expect a tanks armor to be thicker than our backstop.
Link Posted: 7/2/2015 10:16:07 AM EDT
[#44]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I had a guy with a PKM try this outside of Baghdad. My coax penetrated his helmet armor before he got through my turret armor. I would say 5.56 would basically just be peening the armor for me.
View Quote


You should have shot him with the main gun.

To make a point.

Vaporizing a bad guy is a hell of a point.

And let's face facts here: Nothing says dead Hadji quite like getting headshot by a fucking tank.
Link Posted: 7/2/2015 10:18:44 AM EDT
[#45]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
I work at 50 yard indoor range.

Our angled steel backstop has seen millions and millions of rounds. There are not even dimples in the steel. We don't allow steel core, but plenty gets shot at it anyway before we stop it. We don't allow it because it hurts the snail drum collector. Not the actual backstop. That slanted steel does not care. Even steel core 7.62x54 just sparks a lot. Not so much as a dent.

I expect a tanks armor to be thicker than our backstop.
View Quote



Aren't snail drums magazines for Lugers?  If one collected snail drums, why would steel core hurt the collector?

I'm feeling confused!
Link Posted: 7/2/2015 10:40:04 AM EDT
[#46]
Quoted:
Obviously small arms aren't going to do much to a tank, but if one were to hit the exact same spot over and over again, eventually it would have to weaken and give way.  I know there was a .22 SMG based on that principle, the American 180.  It had a 180 round magazine and shot at 1200 RPM, the idea being that enough hits would weaken body armor to the point where it could be penetrated. I don't know how effective it was, but I thought it was an interesting concept, and I wonder how it would fare if scaled up a bit.  If you had an infinite supply of ammo and always hit the same spot on the tank, how much M855 it would take before it finally penetrated.  5,000?  10,000?  100,000?
View Quote

 22LR doesn't do anything to armor.  Velocity trumps volume.
Link Posted: 7/2/2015 10:43:35 AM EDT
[#47]
Quoted:
Obviously small arms aren't going to do much to a tank, but if one were to hit the exact same spot over and over again, eventually it would have to weaken and give way.  I know there was a .22 SMG based on that principle, the American 180.  It had a 180 round magazine and shot at 1200 RPM, the idea being that enough hits would weaken body armor to the point where it could be penetrated. I don't know how effective it was, but I thought it was an interesting concept, and I wonder how it would fare if scaled up a bit.  If you had an infinite supply of ammo and always hit the same spot on the tank, how much M855 it would take before it finally penetrated.  5,000?  10,000?  100,000?
View Quote

You gotta be 12.
Link Posted: 7/2/2015 10:43:49 AM EDT
[#48]
Considering Iranian made EFPs couldn't do it, I'd say Lake City couldn't meet the production demand for the task.
Link Posted: 7/2/2015 10:44:39 AM EDT
[#49]
According to liberal gun grabbers,    1
Link Posted: 7/2/2015 10:45:15 AM EDT
[#50]


Discussion ForumsJump to Quoted PostQuote History
Quoted:
This. Lol.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:





Quoted:


M855 hitting the same spot



This. Lol.





 
I've seen it happen.


During coaches course, I was in the pits during the 500yd slow fire. My shooter hit the spotter pin twice in a row and threw plastic fragments all over the place.







M16A4 with M855 and irons


 
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