45 gap

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      The .45 GAP (Glock Auto Pistol) or .45 Glock (11.43×19mmRB) is a pistol cartridge designed by Ernest Durham, an engineer with CCI/Speer, at the request of firearms manufacturer Glock to provide a cartridge that would equal the power of the .45 ACP, have a stronger case head to reduce the possibility of case neck blowouts, and be shorter to fit in a more compact handgun. The .45 GAP is the first commercially introduced cartridge that has been identified with Glock.


      Development


      The .45 GAP has the same diameter as the .45 ACP pistol cartridge but is slightly shorter, and uses a small-pistol primer instead of the large-pistol primer most commonly used in .45 ACP ammunition. Originally, the maximum bullet weight of the .45 GAP was 200 grains (13 g). In order to provide terminal ballistics that matched the standard 230-grain (15 g) .45 ACP loads, the .45 GAP was designed to operate at a higher standard pressure—roughly equivalent to the higher pressures found in .45 ACP "+P" rounds. Since the .45 GAP has a much smaller cartridge volume than the .45 ACP, the desired pressure and resulting velocity needed to be achieved through powder selection alone. Later development concluded that the .45 GAP can also fire 230-grain (15 g) projectiles, as does the .45 ACP; though this pushes the .45 GAP cartridge to its limits.


      = Glock .45 GAP pistols

      =
      The full-size Glock 37 pistol was introduced by Glock to use the .45 GAP cartridge and was followed by the compact Glock 38 and the subcompact Glock 39. Glock's .45 GAP–sized pistols use the same frame as their 9×19mm/.40 S&W/.357 SIG line of pistols. The slide is slightly wider to accommodate the larger diameter .45 round and is flush with the frame. Magazines for the .45 GAP are of the same dimensions as those of the 9×19mm/.40 S&W/.357 SIG line of pistols.


      = Other .45 GAP firearms

      =
      Initially, due to its acceptance by law enforcement and the popularity of subcompact handguns for concealed carry, a small number of manufacturers decided to produce pistols that were chambered in .45 GAP, but they no longer produce any pistols in that caliber. Only Glock continues to manufacture pistols in the .45 GAP cartridge. Springfield Armory, Inc. did make the XD series in .45 GAP, and indeed it was the first commercially available pistol for it, but discontinued that chambering soon thereafter.


      Law enforcement applications


      Modern law enforcement as a whole has moved away from .45 caliber weapons in favor of firearms chambered in .40 S&W and 9×19mm. Despite this change, the .45 GAP has had a following amongst many law enforcement departments. Three state law enforcement agencies have adopted the .45 GAP as a replacement for their current issue 9×19mm Parabellum (New York) or .40 S&W service handguns (South Carolina and Florida). The New York State Police (New York Police have recently completed the transition to .45 ACP for their duty round), South Carolina Highway Patrol, and Florida Highway Patrol have all adopted the Glock 37 and .45 GAP.
      The Pennsylvania State Police also carried the Glock 37 from 2007, but, due to ammunition supply problems, replaced them in 2013 with the fourth generation Glock 21 in .45 ACP. After recall issues with the new fourth generation Glocks, the Pennsylvania State Police switched to the SIG Sauer P227 in .45 ACP.


      See also


      .44 Magnum
      .45 Super
      10mm Auto
      11 mm caliber
      List of rebated rim cartridges
      List of handgun cartridges
      List of rifle cartridges
      Table of handgun and rifle cartridges


      References




      External links


      Media related to .45 GAP at Wikimedia Commons

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    .45 GAP Discontinued? | Glock Talk

    Mar 6, 2019 · I am seeing some rumblings that I think may mean the end for the .45 GAP. I noticed that Glock's website no longer lists the Gen 4 Model 37, and there never was a Gen 4 for the 38 and 39. I also saw that retailers are listing some .45 GAP-specific Glock parts as "discontinued," not just "out of stock." If that is the case, I think it's a shame.

    Dec 26, 2014 · PA dropped it recently in favor of the .45 ACP, along with a new weapon, the SIG P227. Only NY, SC, GA, & FL appear to remain GAP states. From what I've learned, the primary reason for PA's dropping the GAP for ACP was the cost of ammunition. Personally, I've never found GAP ammo to be any more expensive that anything else.

    45 GAP are any of the "Big companies" still producing it?

    Dec 22, 2023 · Even if commercial ammo was rare, I'd be okay with 45 GAP. The caliber is easy to reload and brass is the only component that is caliber specific. If HP unavailable, I'd not be as concerned about 45 FMJ as with a smaller caliber. Capacity is similar to a single stack 45 acp The Glock GAP pistols are "soft shooting" for 45 caliber.

    First 45 GAP Reloads | Glock Talk

    Feb 9, 2018 · The 45 GAP suffers from the same problem as all other handguns, lots of new powders with little to no handgun reloading data available. Once I get a few thousand pieces of 45 GAP brass rounded up at a reasonable cost, I see a long relationship coming with my Gen 3 …

    .45 GAP Reloads | Glock Talk

    Feb 6, 2019 · If I were to load 45 Gap I would start with Unique powder. Unique is a very stable powder of a medium burn rate and is good for working up loads in and non-magnum cartridge and works very well in the 45 ACP Alliant has a couple of loads for the 45 GAP that gives good velocities but they look to be near-maximum loads so it would be advisable to ...

    What is the BEST defensive load/grain for the .45 GAP?

    Jan 12, 2010 · True to some extent, but a lot of heavy bullets that already move slow like .45 ACP tend to lose velocity rapidly out of a short barrel. A .45 ACP load that goes 900 fps from a 5" may only go 750 from a 3". Of course, I heard that the .45 GAP does better from short barrels compared to the .45 ACP.

    45 Gap and 9mm - The Perfect Combo? - Glock Talk

    Apr 13, 2012 · Reloading: this is where I think 45 GAP really pairs well with 9mm... both use small pistol primers. So unlike reloading 45 ACP I don't have to stock two types of pistol primers. Recently I also upgraded to a Horndady L-N-L with an auto powder dispenser and because the 45 GAP case is the same height as the 9mm, I don't have to adjust the ...

    Firearms Forum Article - .45GAP vs .45ACP - From: Mark Freburg

    .45 GAP vs .45ACP Do the gunzines get it right? by Mark E. Freburg [The following article assumes the reader is familiar with the new .45GAP (Glock Auto Pistol) cartridge and the Glock 37 pistol which fires it.

    Wanting to reload 45 GAP rounds need some help | Glock Talk

    Dec 30, 2011 · For the case of the Dillon 550, the caliber change kit and the dies are identical between .45 GAP and .45 ACP. So, at most, the bullet seating die and the powder measure need to be adjusted when changing between them. Pretty simple. You talked about shooting a lot.

    .45 GAP : Dead Or Alive - Glock Talk

    Feb 3, 2018 · * The .45 gap round is a surprisingly effective round, I'm a life long Glock 23-er but I have come to have respect for the little .45gap.....a Trooper colleague of mine recently dropped a running escaped convicted murderer (Cop killer) at 70 yards in a wooded area by hitting him twice in K4 as he ran full tilt ran toward a wooded area.....did'nt kill …