A new 5.7 handgun sometime in the future?

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Radchero
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A new 5.7 handgun sometime in the future?

Post by Radchero » 20 Dec 2012, 20:31

Check this link out:

http://community.bobergarms.com/forum/t ... california" onclick="window.open(this.href);return false;

Arne Boberg of Boberg Arms is thinking about a 5.7 "pocket sized pistol" Read down towards the bottom of the page. The inquisitive board member (Kevin L. Dearth) is me.

FYI - I'm a Boberg Owner (2 XR9-s Shorties) and anxiously awaiting the XR9-L very soon and the XR45. It might be a long time before we see this interesting pistol but news is news.

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Re: A new 5.7 handgun sometime in the future?

Post by Buffman » 20 Dec 2012, 20:49

Too much velocity loss I'd have to imagine, or getting the gun to properly cycle may also be an issue..

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Re: A new 5.7 handgun sometime in the future?

Post by blueorison » 20 Dec 2012, 23:27

Buffman wrote:Too much velocity loss I'd have to imagine, or getting the gun to properly cycle may also be an issue..
I'm a Boberg proponent, but I'd have to agree with Buffman.
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Re: A new 5.7 handgun sometime in the future?

Post by Esteves » 21 Dec 2012, 08:27

Nice!
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Re: A new 5.7 handgun sometime in the future?

Post by GONRA » 21 Dec 2012, 14:50

GONRA has the original 9mm Boberg for my Reference Collection.
Am on Boberg's wait list for the .45 GAP or (hopefully) more likely .45 ACP Boberg.
which may be avaiallbe in 2013. (?)
In my opinon, a 5.7x28FN Boberg is silly.

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Re: A new 5.7 handgun sometime in the future?

Post by srt-4_jon » 21 Dec 2012, 19:10

Buffman wrote:Too much velocity loss I'd have to imagine, or getting the gun to properly cycle may also be an issue..
Just out of curiosity, how hard is it to get a blowback gun to cycle properly? It would seem to just change slide and spring weight until you got what you wanted.

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Re: A new 5.7 handgun sometime in the future?

Post by panzermk2 » 21 Dec 2012, 20:19

srt-4_jon wrote:
Buffman wrote:Too much velocity loss I'd have to imagine, or getting the gun to properly cycle may also be an issue..
Just out of curiosity, how hard is it to get a blowback gun to cycle properly? It would seem to just change slide and spring weight until you got what you wanted.

I wish it was that easy.
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Re: A new 5.7 handgun sometime in the future?

Post by srt-4_jon » 22 Dec 2012, 06:32

So what more is involved?

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Re: A new 5.7 handgun sometime in the future?

Post by JoJo » 22 Dec 2012, 07:44

I would place an order today for two 5.7 pocket pistols! I keep a NA Black Widow and I love it. Why not a four shot revolver (smaller cylinder) and enough barrel length to dignify the 5.7 cartridge? :ponder:

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Re: A new 5.7 handgun sometime in the future?

Post by srt-4_jon » 22 Dec 2012, 13:28

Can you imagine the amount of heat/pressure/noise coming from the cylinder gap? Better be sure to keep fingers clear.

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Re: A new 5.7 handgun sometime in the future?

Post by panzermk2 » 22 Dec 2012, 19:57

JoJo wrote:I would place an order today for two 5.7 pocket pistols! I keep a NA Black Widow and I love it. Why not a four shot revolver (smaller cylinder) and enough barrel length to dignify the 5.7 cartridge? :ponder:

Case set back will bind the cylinder up.
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Re: A new 5.7 handgun sometime in the future?

Post by srt-4_jon » 22 Dec 2012, 20:09

Wouldnt a moon clip stop that?

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Re: A new 5.7 handgun sometime in the future?

Post by panzermk2 » 22 Dec 2012, 21:06

srt-4_jon wrote:Wouldnt a moon clip stop that?

Nope not at all. Moon clips are for rimless semi auto rounds so the can be extracted from a cylinder. If a moon clip was installed then the whole thing would HELP the fired case lock everything up.
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Re: A new 5.7 handgun sometime in the future?

Post by srt-4_jon » 23 Dec 2012, 07:55

So why doesn't a Rimless cartridge lock up in a revolver?

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Re: A new 5.7 handgun sometime in the future?

Post by JoJo » 23 Dec 2012, 08:48

panzermk2 wrote:
JoJo wrote:I would place an order today for two 5.7 pocket pistols! I keep a NA Black Widow and I love it. Why not a four shot revolver (smaller cylinder) and enough barrel length to dignify the 5.7 cartridge? :ponder:

Case set back will bind the cylinder up.
I have no doubt that YOU can design a practical 5.7 pocket pistol! With your knowledge of the 5.7x28 characteristics, it would be a natural career progression. I have a friend here in Atlanta that is a skilled machinist who builds prototypes for all kinds of products. If you design it, I might be able to get him to build it. The only problem he might have is the barrel. A rough prototype might interest an investor.

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Re: A new 5.7 handgun sometime in the future?

Post by panzermk2 » 23 Dec 2012, 19:38

srt-4_jon wrote:So why doesn't a Rimless cartridge lock up in a revolver?

Because it does not have a shoulder that moves forward jamming the case had backwards.


That is why the 22 Hornet has the crazy shoulder it has. It was made to be shot out of a revolver. Even then it took some time before they got it right.

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Re: A new 5.7 handgun sometime in the future?

Post by srt-4_jon » 23 Dec 2012, 21:00

How would the shoulder move forward when there is chamber in the way?

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Re: A new 5.7 handgun sometime in the future?

Post by panzermk2 » 23 Dec 2012, 21:43

srt-4_jon wrote:How would the shoulder move forward when there is chamber in the way?

It wouldn't, it will try though really really hard it will try, and when it can't go forward which direction do you think the brass is going to go?
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Re: A new 5.7 handgun sometime in the future?

Post by srt-4_jon » 23 Dec 2012, 22:01

Ahh I got you then. So then wouldnt that be a problem inherent with all bottleneck revolver rounds? Could you not just cut the chamber longer and headspace with the moon clips?

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Re: A new 5.7 handgun sometime in the future?

Post by panzermk2 » 24 Dec 2012, 00:22

srt-4_jon wrote:Ahh I got you then. So then wouldnt that be a problem inherent with all bottleneck revolver rounds? Could you not just cut the chamber longer and headspace with the moon clips?

It is a massive problem with all bottle necks cartridges in wheel guns. The problem gets worse as the pressure goes up. I guess in theory you could make the cylinder longer and longer. But the how long would you make it? Then you will have head spacing issues. Look up the history of the 22 hornet. You will find out this has been a problem for almost 100 years.
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