Kentucky Ballistics tests second RN 50

[DiffEQ]

Marginally amusing, but I had hoped to see some actual science.

 

[Tokay444]

The second rn50 didn't blow into the neck. The "ears" on the receiver stayed put.

Without any question I dont want to be near any rifle if it energetically disassembles itself.

Over out.

It blew the pipe bomb cap straight back at the shooter's face in the exact same manner...

 

[matthias]

We seem to be going around in circles.

If I may clarify , the broken ear is what almost killed Scott. That is what penetrated his chest and lacerated his jugular.

In the second test the ears did not shear off. Yes the cap blew back.

The barrett blew the top receiver tube straight up about 6"-12" depending on where you measure.

If your cheek was on that i would bet a dollar similar injuries would be sustained.

I get that you don't like the screw on breach. I get you like to argue about it. I agree on some of your points. I am also done with this. Thanks for the entertainment.

 

[Tokay444]

So, let’s see what both the pipe bomb and the Barrett do when subjected to a simple and completely plausible incipient case head separation on a normal round, and not this magic “190KPSI” stick of dynamite.

 

[Tempest]

The RN-50 is a pipe bomb in waiting.

 

[C_Ackley]

Any gun is a pipe bomb if you're well over SAAMI spec, as in 2x, 3x, 4x.
I've heard those "pipe bomb" statements from others, the people making them are often not particularly bright given their lack of undestanding as to how mechanically strong threaded breeches are.
Stay within normal pressures, you'll do just fine. If you're that scared of that firearm then don't pretend as though you were ever in a position to purchase it, don't bother commenting on it.

 

[Rodney]

Doesn’t the breach plug on a muzzle loader thread on? Threads have proven to be strong enough for firearms on many occasions.

 

[C_Ackley]

Threads have proven to be strong enough for firearms on many occasions.

And artillery and our every day lives, for certain. I used two head bolts to lift and engine from a tractor the other day.
They call this force on threaded objects "pull-out" force. It's a measure of the force required to grab a bolt and pull it straight out of its threaded mate. The number of threads, how big around the the threads are, the material, and the direction of the force applied are all components of how strong the breech is.
Since we're talking about firearms. The force is applied straight back, which is the direction the threads are strongest at resisting.

 

[atblis]

Any gun is a pipe bomb if you're well over SAAMI spec, as in 2x, 3x, 4x.
I've heard those "pipe bomb" statements from others, the people making them are often not particularly bright given their lack of undestanding as to how mechanically strong threaded breeches are.
Stay within normal pressures, you'll do just fine. If you're that scared of that firearm then don't pretend as though you were ever in a position to purchase it, don't bother commenting on it.

What people are arguing is not that threads and such aren't strong, but that the design has no mechanism to fail gracefully when stuff inevitably happens. You can't argue that it's so strong it'll never happen because he already blew one up accidentally. The Barrett failing looks terrible, but consider that the majority of the energy was directed to the sides and not back towards the operator. Yes I know the dummy caught a piece of something, but it looks like he had the dummy positioned to the side a little, and not where the shooter's torso would actually be when operating the rifle. That sheet metal dust cover bending up may very well injure somebody, but it's a blunt object spread over a large surface. I don't see it punching a hole in an artery.

 

[C_Ackley]

What people are arguing is not that threads and such aren't strong, but that the design has no mechanism to fail gracefully when stuff inevitably happens.

There is no failsafe for 180,000psi that is guaranteed to save someone.
The failsafe is our brains.

 

[atblis]

Actually that brings up another point about why the RN50 is a questionable design. I don’t see a way for the case to fail before the action fails in the manner we’ve observed. If the case could fail and vent pressure you might not hit that 180kpsi.

 

[darkangel_r2]

Actually that brings up another point about why the RN50 is a questionable design. I don’t see a way for the case to fail before the action fails in the manner we’ve observed. If the case could fail and vent pressure you might not hit that 180kpsi.

Like the hole savage and Remington put on the action right at the front of the bolt face on the opposite side of the shooters face. Not sure if that's standard practice with 50bmg.

 

[SKWERLZ]

Doesn’t the breach plug on a muzzle loader thread on? Threads have proven to be strong enough for firearms on many occasions.

Look at the interrupted threads locking the breech on canon and naval guns