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      The .460 Rowland / 11.43×24mm is a rimless, straight walled handgun cartridge designed in 1997 by Johnny Rowland and developed in conjunction with Clark Custom Guns as a derivative of the .45 ACP with the goal of producing a cartridge which can achieve true .44 Magnum ballistic performance and be fired from a semi-automatic platform. Despite its name, the Rowland is a true .45 caliber cartridge, like its parent.


      Design


      Rowland retains the majority of the design of the .45 ACP, with interchangeable projectiles at the same standard grain weights and nearly identical case dimensions aside from an increased case length of 0.957 inches (24.3mm) instead of the .45 ACP’s .898 inches (22.8mm). This was done to prevent the accidental loading of .460 Rowland in firearms intended to fire .45 ACP. Like the .44 Magnum and its shorter parent case .44 Special, a firearm converted to .460 can still safely chamber and fire .45 ACP.
      The internal case pressure of the .460 Rowland is double of the .45 ACP, with operating pressures of up to 40,000 psi.
      The case powder capacity of the .460 is like the .45 despite the longer case length, due to the overall length being equal as the bullet is seated further into the case and can vary depending on the size and weight of the bullet. It is unclear whether this deeper-seated bullet influences the ballistic performance of the cartridge.


      Applications




      = Hunting and Wilderness Protection

      =
      Opinions vary greatly when dealing with animals heavier than 200 pounds, but generally speaking, the .460 Rowland is considered appropriate for most medium (e.g., deer) to large North American game (e.g., black bear, elk, etc), as its performance is equivalent to the .44 Magnum, especially with proper shot placement. Being a straight walled handgun cartridge, permits its use in hunting in most states with appropriate game.
      In the context of self-defense from predators and large game, guidelines suggest there is no absolute minimum or maximum performance level of firearm or combination of firearms that is best for handling these situations. Full powered rifles are generally recommended; the high muzzle energy and ability to use Spitzer style and more round nosed or pointed bullets result in desirable performance in important areas such as penetration and projectile mass retention.
      While long guns are generally recommended, magnum powered handguns like the .460 are still a viable option. While not as effective as a full power rifle, a magnum handgun is more compact and more practical to carry. According to the US Forest Service in Oregon, familiarization with a weapon's platform is often seen as almost more important than the specific performance level of the weapon itself. A weapon of reasonable performance is adequate, assuming the shooter is able to operate and maintain a level of marksmanship under duress.


      Ammo Type


      While pointed or Spitzer bullets are aerodynamically superior to ones that are more flat nosed, within realistic encounter ranges, they are not necessary. More emphasis should be put on the quality and construction of the bullet to maximize mass retention and minimize projectile deformation(which in turn will maximize penetration). Suitable bullet materials include hard cast lead and solid copper.


      = Platforms

      =
      FN FNX
      Glock 21
      HK USP
      M1911
      Masterpiece Arms MPA


      See also


      List of handgun cartridges
      Table of handgun and rifle cartridges
      .44 AMP
      .45 Super
      .45 Remington–Thompson


      References




      External links


      Official website
      Clark Custom Guns

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    Search Results

    460 rowland

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    Does anyone have 460 rowland 1911's and what are...

    Nov 4, 2023 · A friend converted his 1911 to 460 Rowland and loves it. He used the Clark Conversion kit and did it himself to one of his older 1911's. His motivation is to have a gun he …

    Loading the 460 Rowland - 1911Forum

    Mar 6, 2013 · In reloading for the .460 Rowland we have learned several things. For now, at least, Accurate Arms #7 is the powder for the .460 Rowland. We may come up with others later. …

    460 Rowland—What’s the consensus and why? - 1911Forum

    Dec 13, 2022 · I dont feel 460 rowland is necessary for black bears. Buffalo Bore 255gn hard cast is what my experience is with. Its my carry load around things that may try to eat me or stomp …

    .460 rowland | Page 2 | 1911Forum

    Feb 13, 2008 · Hi just came across this post on the .460 Rowland I have 3 .460 Rowland guns. S+W 625 JM 6 rounds .45 acp revolver and had Clark Custom Guns convert an extra cylinder …

    .460 Rowland Reloading - Long Range Hunting Forum

    Oct 31, 2021 · So this is not on the long range spectrum, but I finally converted a sidearm to the .460 Rowland. I actually bought this Glock 41 when it first came out planning to convert it then, …

    460 Rowland? - 1911Forum

    Oct 19, 2019 · The best bullets for the .460 Rowland are solid construction moving as fast as safely practical - between 185 and 260 grains, though 230-240gr is a good practical maximum …

    .460 Rowland Conversion on a Rock Island? - 1911Forum

    Jul 3, 2013 · I run my 460 Rowland kit on my Colt Rail Gun. Originally I had it on an 80 Series NRM Colt Governtment 1991 and it worked great except for the pearlite grips that split in two …

    460 Rowland - 1911Forum

    Dec 15, 2007 · I'm pretty sure the post confused .460 Rowland with .460 S&W and everything followed. I'm pretty sure the post confused .460 Rowland with .460 S&W and everything …

    460 Rowland | Page 2 | Long Range Hunting Forum

    Apr 21, 2020 · I have a Wilson Combat 460 Rowland and it shoots and functions great. I wouldn't hesitate to carry it as bear defense. I t's accurate, powerful and easy to carry. the 460 is …

    460 Rowland - 1911Forum

    Jul 15, 2011 · Today I received my 460 Rowland kit from Clark Custom. As advertised, it was a drop in kit complete with 24# & 20# Wolff recoil springs, heaver firing pin spring, and two piece …