So what is the strongest action ever?

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That looks like the Missouri. I'm not a naval guy though so I might be wrong. :)

My cousin was stationed onboard the Missouri for 12 years, including during Gulf 1 (think that was the last time those main guns were fired in anger.)
 
I have overloaded a lot of guns.

a) A's; Ruger #1, Handi rifle break action, Stevens break action 410 converted to rife, Sav 219 break action

Pros; These are way stronger than the brass. They have just a firing pin hole in the breech face.

b) B's; 98 Mauser, Win M70

Pros; double stage gas filter on the firing pin in the bolt.
Extra lug in the rear.

Cons; Has an ejector slot in the breech face
When the case head blows, pieces of the extractor go to where a shooter's head might be.

c) C's; Rem 700, CZ527, 96 Mauser, Arisaka [Sorry Ackley]

Cons; bad gas path
Rem 700 has an extractor and an ejector feature in the breech face, but a good firing pin fit.

d) D's; Sav 99, 303 Lee Enfield, AR15s

Cons; stretches the brass

e) D-'s: SKS

Cons; blows the firing pin out the rear of the bolt.
 
IIRC, read that it was in the metallurgy, supposedly the steel and heat treatment of it was outstanding.
 
IIRC, read that Strength of the Japanese rifle actions was in the metallurgy, supposedly the steel used and heat treatment of it was outstanding.
 
The Double Barrel break action rifle. I believe until recently the only way you could get a Nitro Express (NE) caliber was in the Double Rifles. This was mostly due to the metallurgy, the metals of today are much stronger then they were say 60 years ago. In the mid 1960s is the first time I ever heard of someone building any thing but a double rifle using a NE round and that was base on a up sized Mauser 98 action.

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...The Double Barrel break action rifle. I believe until recently the only way you could get a Nitro Express (NE) caliber was in the Double Rifles. This was mostly due to the metallurgy, the metals of today are much stronger then they were say 60 years ago. In the mid 1960s is the first time I ever heard of someone building any thing but a double rifle using a NE round and that was base on a up sized Mauser 98 action...


As you point out, the Nitro Express rounds need an upsized action to handle the extra length of the cartridge. NE cartridges are long to lower the pressures involved for the caliber. Lots of shorter cartridges are loaded to way higher pressures to achieve similar or better ballistics. Overload a NE cartridge and the break open action will come "off face" and require expensive corrective surgery.
 
clance

The Double Barrel break action rifle. I believe until recently the only way you could get a Nitro Express (NE) caliber was in the Double Rifles. This was mostly due to the metallurgy, the metals of today are much stronger then they were say 60 years ago. In the mid 1960s is the first time I ever heard of someone building any thing but a double rifle using a NE round and that was base on a up sized Mauser 98 action.

I have here a PESCO Borg Warner handy book of formulas 1968 that my father was using to design guns back then. I shows on page 3-7 a table of Rockwell C hardness vs tensile strength.
RC 20 is 108 ksi, and it is linear up to RC 60 at 314 ksi.

Here is Ruger's chart of their cast steel will do for strength
http://www.ruger.com/casting/T-Steel.html

Other than when Ruger famously wanted to turn their 44 mag into a 454 by boring it out, and they had to pass proof loads, you will not hear many stories about the strength of steel holding back some gun design.

It does not matter how strong a steel is, it still has the same stiffness.
And we keep adding extra steel mass to cut down on felt recoil.

Look at a typical 98 Mauser very thinly surface hardened, but annealed at the core. That action weighs 2 pounds 15 ounces.

If you want a 98 Mauser in 600 Nitro Express, they weigh more and cost more, but I doubt the steel is any stronger. It is just scaled up in size.
http://www.heymusa.com/heym_bolt_action.htm

The steel need be no stronger, as they just add more soft steel, and it stays easy to machine, and does not warp after heat treating.
 
“So what is the strongest action ever?”

I do not know, it is boring to discuss the topic, most common answer is “Ackley welded the barrel shut etc. etc.”, “...and could not blow ‘it’ up...”.

Forget the action, I want the cases, if the action did not blow up, was not rendered scrap or did not swarm some credit should be given to the case.

Most have never seen a Model 38 or Model 99 in parts and pieces, I was being told the strongest action in the world was the Japanese Model 38 and 99, I handed the person telling the story a model 38 and 99 action then asked him how the two actions would compare with the ‘Strongest action in the world”. He responded by critiquing the front receiver ring, “Look!! The front receiver ring is cut more than half way through from front to back” The Model 38 has a huge extractor cut, tall, wide and long, so much for ‘more’ metal.

Then there is the barrel stub, the chamber goes from the stub to the barrel, forget the tapper. a small group of gun types in FT. Worth, TX. made an attempt to destroy a M1917, they got tired and bored, they loaded up a case to the maximum (capacity) with pistol powder, pulled the trigger, the rifle held together until the bullet got about 1 foot from the muzzle at which point the barrel took on the appearance of ram horns. They hung the rifle on the wall for all gun enthusiast to see, I have no clue where the rifle is today.

In attempt to help a friend zero his rifle a ‘too eager’ shooter purchased new ammo and with the rifle went to the range, after he fired the first round he found himself at a gun shop in N. Texas, as the SMITH tells the story, the ‘too eager’ shooter was going to sue everyone. Hours later the Smith ask the shooter about the ammo, the shooter had a receipt and a box of 19 unfired rounds, the Smith ask him if he checked the markings stamped on the barrel before he purchased the ammo. Anyhow, the rifle was chambered to 25/06, the ammo purchased was 308 Winchester, then came the speculations as in “I bet that bullet was 3” long before it got down the barrel”.

I personally do not care, my opinion, the only way the bullet could get longer would require the bullet to be pulled out the barrel, not pushed, in my opinion the bullet was turned inside out, the lead core went first then came the jacket. The Smith checked the rifle, charged the man and then returned it with warnings, do not be ‘too eager’.


Anyhow, forget the receiver, I want the same cases that were used in the/an attempt to blow up the rifle.

The only discussion I have been involved in that included the phrase “Strongest action in the world” that was not boring was with a smith in Hawaii.

F. Guffey
 
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