When .40S&W or .45Auto Boberg will be in production?

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Permalink Reply by Arne Boberg on January 19, 2012 at 3:35pm

I actually started working on the design of a .45 GAP two days ago - my goal is to get some 3D images out in the next few weeks.  However, this gun will require a lot of investment and testing, and is at least two years out before getting to a pre-order stage - and that is IF it works.  The dynamics of this much fatter cartridge will be totally different - this is not an easy undertaking.

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Permalink Reply by CWC on January 19, 2012 at 4:46pm

HOTDOG!



Arne Boberg said:

I actually started working on the design of a .45 GAP two days ago - my goal is to get some 3D images out in the next few weeks.  However, this gun will require a lot of investment and testing, and is at least two years out before getting to a pre-order stage - and that is IF it works.  The dynamics of this much fatter cartridge will be totally different - this is not an easy undertaking.

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Permalink Reply by josh2415 on January 19, 2012 at 5:14pm

9mm what?  Many European police agencies use 9x17mm Short (ie 9mm Kurz or 380 Auto), and there's a BIG difference in "stopping power" between it and the 9x19mm Parabellum used in the XR9-S.

Techat Chatanuluk said:

the gold shop robber was shot by a police 11 rounds of 9mm and can go over 40 kilometers then caught and survive...

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Permalink Reply by Jose A. Montalvo on January 19, 2012 at 7:42pm

Well, that settles it. 45 GAP it is then... thats ok, two years R&D it gives a chance for the cartridge to become more popular and hence, more economical...

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Permalink Reply by BullDog007, Dennis on January 19, 2012 at 9:25pm

I never thought I would be interested in a 45 (of any kind), but if you can pull it off (and I know you can), put me in que for one.  [I waited 2 1/2 years for the XR9S, I can wait that long for an XR45SG (God willing).]  The lower pressures should minimize the cartridge seperations experienced with poor crimps of some 9mm ammo.  Good luck.
 
Arne Boberg said:

I actually started working on the design of a .45 GAP two days ago - my goal is to get some 3D images out in the next few weeks.  However, this gun will require a lot of investment and testing, and is at least two years out before getting to a pre-order stage - and that is IF it works.  The dynamics of this much fatter cartridge will be totally different - this is not an easy undertaking.

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Permalink Reply by josh2415 on January 19, 2012 at 9:59pm

The cartridge pressure has nothing to do with the separations, simply the physics of being plucked rapidly from the magazine.

BullDog007, Dennis said:

 The lower pressures should minimize the cartridge seperations experienced with poor crimps of some 9mm ammo.  Good luck.
 

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Permalink Reply by Arne Boberg on January 19, 2012 at 10:37pm

Actually, very high pressure (which means very high slide acceleration) combined with little or no crimp is the worst case scenario.   I'm expecting slide acceleration to be considerably lower in a .45 caliber version.

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Permalink Reply by josh2415 on January 19, 2012 at 10:43pm

Ahh, I stand corrected - hadn't thought of the slide acceleration as being the force driving the extraction. Good thing I don't design pistols. ;) 

Arne Boberg said:

Actually, very high pressure (which means very high slide acceleration) combined with little or no crimp is the worst case scenario.   I'm expecting slide acceleration to be considerably lower in a .45 caliber version.

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Permalink Reply by bbrkc on January 20, 2012 at 6:28am

Probably miniscule but, a larger bullet should have greater surface area creating more friction. Then again bullet weight might offset that. 

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Permalink Reply by Larry on January 20, 2012 at 9:37am

Wow... I thought I was the only one with a GAP pistol...Actually 2 of them... both Paras... I like the caliber, it allows for  .45 stopping power in a 9mm frame&grip size...  If only Para could have gotten the timing and stovepiping issues fixed I'd carry it....I'd put me on your pre order list if it is available Arne....  
 
Arne Boberg said:

I actually started working on the design of a .45 GAP two days ago - my goal is to get some 3D images out in the next few weeks.  However, this gun will require a lot of investment and testing, and is at least two years out before getting to a pre-order stage - and that is IF it works.  The dynamics of this much fatter cartridge will be totally different - this is not an easy undertaking.

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Permalink Reply by Arne Boberg on January 20, 2012 at 9:51am

The surface area on the outside of the bullet grows linearly with bullet diameter.  The base area of the bullet, however, grows as the square of the diameter.  In other words, bullet drag on the bore becomes less of a factor as you go to larger diameters.

bbrkc said:

Probably miniscule but, a larger bullet should have greater surface area creating more friction. Then again bullet weight might offset that. 

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Permalink Reply by Techat Chatanuluk on January 20, 2012 at 11:13am

Yes,the policeman shot him (armed gold robber) 15 rounds 9mmPara (1 magazine of Beretta 92FS Stainless) and only 4 rounds miss the robber take 4 rounds in his body and other 7 rounds in his leg(s) and arm(s) but can ride motorcycle go away from gunfight place and was caugt in the health center in other district 42-43 kilometers far away no drug in blood and urine test ! that why I want .40 or .45

 
josh2415 said:

9mm what?  Many European police agencies use 9x17mm Short (ie 9mm Kurz or 380 Auto), and there's a BIG difference in "stopping power" between it and the 9x19mm Parabellum used in the XR9-S

Techat Chatanuluk said:

the gold shop robber was shot by a police 11 rounds of 9mm and can go over 40 kilometers then caught and survive...

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