Chain fire in a tubular magazine

[JumboJVT]

Really? Where did you see this? Was it an intentional test? For this to happen, the sun, moon & stars need to align, LOL! Seriously, no one has been able to duplicate this without DIRECTLY firing a projectile at the first shell’s primer. Here is a video where they try everything! The force generated in this video is many, many times that of an 8’ fall. And still, it would not happen.


I’m going to say, I believe this phenomenon is yet again one of those, “I heard it from someone who heard it from someone’s uncle!” And overtime the “I HEARD”, becomes “I SAW THIS GUY!” More Interwebs fantasy.

And somehow your Internet "proof" beats his. Please stop.

 

[halfmoonclip]

The bullet 'detonations' are a real mystery. Having had few primers fail to go off when I wanted them to...
Load my .45 Colts with RNFP; no sense in tempting fate.
Moon

 

[Jim Watson]

If Col. Lebel and Gen. Tramond designed 8mm Lebel Balle D ammunition to protect the primer from spitzer bullets, and John Pedersen designed the Remington pump rifle magazine to protect the primer, who am I to argue?
Ed Harris converted a Marlin lever action to .45 ACP but would not shoot hardball in it.

My .30-30 is a bolt action anyhow.

 

[Driftwood Johnson]

Howdy

The two guys in the first video are idiots.

Besides having no idea of the correct terminology, calling primers percussion caps, and complete cartridges bullets, they clearly have no idea what is happening in their tests.

When any cartridge is fired, ANY CARTRIDGE, the back pressure developed as the primer ignites tends to push the primer backwards before the powder begins to burn. In a closed breech, the primer is driven back, but recoil then reseats the primer. Anybody who has ever loaded a cartridge that does not develop enough pressure will know it because the primers will not reseat all the way.

With nothing restraining the primer in their tests, it is no surprise that the primers were driven completely out of the cartridge.

I have quite a collection of lever guns with tubular magazines and I have shot them a lot over the years. Most lever guns are relatively heavy. At least with cartridges such as 44-40 or 38-40 recoil is not very heavy because the rifles are relatively heavy. However when a round is stripped out of the magazine by the rifle mechanism, the follower slams all the rounds in the magazine forward with considerable force. Particularly so when the magazine is full or close to full because the magazine spring will be compressed the maximum amount. It is far more likely that the magazine slamming those rounds forward might ignite cartridges in the magazine, not recoil.

I have not been present, but have read of several incidents in Cowboy Action where one or more rounds fired in the magazine. Particularly with a replica of the 1860 Henry, which has a slot running the entire length of the bottom of the magazine, the result has been a magazine bent very badly out of shape. Brass shards cutting bystanders has happened too.

 

[aaaaa]

Howdy
When any cartridge is fired, ANY CARTRIDGE, the back pressure developed as the primer ignites tends to push the primer backwards before the powder begins to burn. In a closed breech, the primer is driven back, but recoil then reseats the primer. Anybody who has ever loaded a cartridge that does not develop enough pressure will know it because the primers will not reseat all the way.

I would expect that could cause a revolver to lock up. There is one plus of the top-break revolver. At least you will get the cylinder open.

 

[Gordon]

I don't see why even to this day nobody else used John Pedersen's spiral stamped mag tube !

 

[Driftwood Johnson]

I would expect that could cause a revolver to lock up. There is one plus of the top-break revolver. At least you will get the cylinder open.

Yes. it can cause a revolver to lock up, or at least require more effort to rotate the cylinder. About 1/2" or so around the firing pin hole on a modern revolver is raised above the rest of the surface. The rest of the area is relieved slightly. So a primer that did not reseat completely would only case the cylinder to bind in that area. There would be a few more thousandths of clearance every where else. This is a S&W 38 Military and Police made about 1908, that is why all the cartridges fired over the years have made a circular impression around the firing pin hole.

 

[aaaaa]

Yes. it can cause a revolver to lock up, or at least require more effort to rotate the cylinder. About 1/2" or so around the firing pin hole on a modern revolver is raised above the rest of the surface. The rest of the area is relieved slightly. So a primer that did not reseat completely would only case the cylinder to bind in that area. There would be a few more thousandths of clearance every where else. This is a S&W 38 Military and Police made about 1908, that is why all the cartridges fired over the years have made a circular impression around the firing pin hole.

Great info. I just checked my S&W 442 and that area is raised, not enough for my old eyeballs to see it, or even feel it with my finger, but a steel straightedge could be rocked across the recoil shield when placed over the firing pin area.

 

[Pat Riot]

What just happened?

 

[Pat Riot]

I highly recommend that if you do not believe a chain fire or mag blowup or magazine explosion is not possible and you really want proof that you should take one for the team and start loading spire points in your lever guns every time you shoot them.
Why bother with boring old round noses when the benefits of ballistic coefficient and better range are waiting just for you.
C’mon! It’ll be exciting and you’ll be putting your money where your mount is. Prove all those old Fudds and those people with engineering degrees that design guns and all those guys that didn’t look to the future to provide internet proof to all these millennial minded people that don’t believe anybody or anything unless there’s a link. One should not believe everything on the internet though, right.
Heck, even one our greatest president warns of internet information.

 

[Pat Riot]

Here, I found this on Reddit and everyone on Reddit is highly intelligent and they know a thing or two ‘cause they’ve seen a thing or two - to quote the nice man on Farmer’s Insurance commercials.

https://www.reddit.com/r/guns/comments/2jc8nt/the_final_word_on_tubular_magazine_detonations/

These guys sound very knowledgeable and highly educated so I would definitely print this to show folks at the range when they see you loading spire pointed cartridges in your gun and warn you about it.

 

[25-20 WCF]

Remington sold this highly dangerous pointed ammunition for over six decades, fortunately their disdain for the safety of their customers was ultimately put paid by the bankruptcy.