Why does the blowback action stop at 380

Man, there were another two paragraphs after my first paragraph in my last post. Not sure what happened there. Now I have to try and remember what I actually wrote.
 
OK, let's see if I can recall what I wrote. Despite the fact that I didn't have my facts quite correct it appears that the three designers of the model eight, 1907, and the standard, we're all working on the premise that their design was the best design. I have always thought that the gas operated semi automatic was the best way to approach rapid fire in a large caliber rifle. Not the least expensive method. But that is based on my impression of the history of the semi automatic rifle. When these guys were working on their designs they didn't have the luxury of several decades of trial and error.

To try and bring it back to a semi automatic handgun discussion, handguns are a completely different story. The energy in a handgun, at least The lower calibers, can be handled in the straight blowback as history has proved. But I still think that designers have been coming up with very complex ways to solve problems and avoid others patents.

Aguila - do you think JMB considered that he might have to work around some of his own patents later in his life? ( I know, anybody who could answer that question is long dead).
 
I really like the water pistol look of the Astra 400 and 600. But I don't think I would like the felt recoil like the Beretta 84 I had.
 
The Rem 51 I had was a fine gun and that got me started.
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I have both the .380 and the .32 version, the .32 ACP Remington 51 is the lowest powered pistol I know of that has a locked breech.

They are called hesitation locked breeches because the bolt kicks back as pure blowback for the first .100" or so, after that it's locked solid until that slide retracts far enough to lift the locking ledge free.
As far as I'm concerned everything over .22 would be a better gun to shoot if it's locked breech.
I just had a question, the Keltec .32, is also a locked breech design. Any more .32's?
 
"*The Model 1905 was in .35 Winchester (not to be confused with .35 Remington, a much more powerful round). The Model 1907 was basically the same as the Model 1905, but beefed up to handle the .351 Winchester. It was the "cop rifle" for many years, often used along with, or in lieu of, the later less powerful, but "sexier", Thompson SMG."

Jim,

No, the Model 1905 was NOT chambered in .35 Winchester, it was chambered in .35 Winchester Self Loading, or .35 WSL.

The .35 Winchester, or .35 WCF, was a rimmed, bottlenecked cartridge of MUCH greater power and originally designed for and chambered in the Model 1895 lever action rifle.

Some loads for the .35 Win. pushed 3,000 foot pounds of energy, nearly 4 times what the .35 WSL could churn out.
 
" the .32 ACP Remington 51 is the lowest powered pistol I know of that has a locked breech."

Lowest powered one I know of that was in semi-standard production was the Japanese Type B Nambu, or Baby Nambu, in 7mm.

Roughly 80 foot pounds of energy, or about half that of the .32 ACP.
 
S&W had a 9mm blowback, the Sigma. Not the V or VE model, but similar to the 380 Sigma. Supposedly it kicked like a mother, I ALMOST bought one years ago for $180, kind of wished I did. I have the 380, and while it is not what I would call a "quality piece", it shoots really well and I carried it for years. I just like the LCP better.
 
Lowest powered one I know of that was in semi-standard production was the Japanese Type B Nambu, or Baby Nambu, in 7mm.

Roughly 80 foot pounds of energy, or about half that of the .32 ACP.
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You're right, I wasn't thinking of foreign handguns. The Remington 51 is probably off the beaten path for most members, so going to foreign designs would be in order.
I wonder how many foot pounds a .25 auto would show in a 6" barrel, probably knocking the door on that 80 FP.
 
"I wonder how many foot pounds a .25 auto would show in a 6" barrel, probably knocking the door on that 80 FP."

Hum... Probably...

But I doubt if it would get an answer. :D
 
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