The .357 SIG is simply a .40 caliber Smith and Wesson necked down to 9mm. There’s a silver lining though. U.S. Secret Service (USSS) and U.S. Coast Guard (USCG). The 10mm would then fade to near obsolescence. Their efforts led to the creation of the Bren Ten handgun. lbs). A little pistol with a solid pedigree, the new FN 503 9mm sub-compact lived up to its family name in testing and is a solid every day carry gun. They called this cartridge the .357 SIG — an homage to the revolver caliber whose ballistics it attempts to mimic. Two of them, Phil Sharpe and Elmer Keith, set out to develop their own hot-loaded versions of the.38 Special. I think if you want to choose between .357 sig and .40, I'd go with the .40. 357 SIG and 357 Magnum are two very different cartridges. Actual shooting reports that this is the case and the round is performing as designed. 10mm vs. 357 Mag Muzzle Energy. Pythons having issues with the cylinder clockwork, Disclaimer Policy And FTC Affiliate Disclosure |. Michael Dixon christened it the 10mm Auto, but the purists refer to it as the 10mm Norma. There’s. I think that 9mm SIG would have went over like a lead Zeppelin so the .357 SIG moniker was chosen, obviously to play upon the legendary .357 Magnum. This is a difference of 1,473 foot-pounds of force favoring the .357 SIG which amounts to 20.25% more energy, but keep in mind that you need 15 rounds or 87.50% more ammo to achieve this. Ultimately this would result in Smith and Wesson developing the, Not too long after, SIG Sauer, at the time an emerging leader in handguns manufacture and design (thanks to their entry that passed the highly controversial. When comparing two similar-weight guns shooting cartridges with similar ballistics, if one is a semi-auto and the other is a revolver, the semi-auto will have noticeably less recoil, giving it a speed advantage as far as target acquisition and follow-up shots. How do we define success? While the fastest single load—a red-hot 125-grain JHP—was a .357 Mag., the average velocity of all .357 Mag. You can use full-metal jacket and hard cast lead bullets, but not jacketed hollow points. In my velocity testing using five different .357 Sig pistols, a Sig Sauer P229, P226, P320, Glock 32, and Glock 31, I’ve gotten pretty darn close with a number of loads using 125-grain bullets. That’s because there are really only two companies making guns chambered for the .357 SIG: Glock and SIG Sauer, with the former being the cheaper option all the time. They chose to modify .30 Remington brass by putting a 45-degree extractor groove under the case head and cutting it to 0.99 inch length. The 357 SIG was created in conjunction by SIG Sauerand Federal Premium and introduced for sale in 1994. The whole concept that Sig-Sauer was working towards was to match the Magnum, and that was never done which is why less and less departments are turning to it when they can go bigger with the .40 S & W. While to some this might come down to a revolver or semi-auto debate that really isn’t the case. , Ruger’s Blackhawk Convertible and Taurus’ Model 692 to name a few. By virtue of its flat profile, a semi-auto doesn’t require too much effort to carry concealed, The revolver’s cylinder on the other hand has a bulging profile that easily prints, making it a bit harder to conceal. whitetail and hog. In power and performance the .357 Sig tries to be better than it really is, and while it is good it is not good enough to justify the claim of being equal to the .357 Magnum. That, and some people on the Internet say that the .357 SIG, being it was made to duplicate the ballistics of the .357 Magnum, is as powerful, if not more. Keith developed a super hot .38 Special load which was still safe for the aforementioned revolvers with 15 grains of Alliant 2400 providing the required energy to push a 154-grain hard-cast lead hollow point to velocities reaching anywhere from 1,200 to 1,300 feet per second. But I digress. Why should you choose an AR pistol or AR rifle? It’s around two thousandths of an inch narrower, which means if you’re planning to reload, a bullet meant for the .357 magnum will not fit in a 357 SIG case. Colt, after being tight-lipped about one of their biggest snake gun resurrection projects for the last five years, has finally unveiled what many consider to be their most respected revolver from what seemed like a lifetime ago: the Colt Python. Keith’s efforts proved that the .38-44 Heavy Duty and Outdoorsman N-frame revolvers could safely chamber and shoot much more powerful .38 Special cartridges than the ones Remington manufactured. If you don’t like revolvers but you want to shoot full-power 357 Magnum rounds, you can get a Coonan pistol. For those who want quality .357 Sig brass, Capital offers once-fired 357 Sig reloading brass for sale in 250-, 500- and 1,000-piece lots of mixed-headstamp casings. This is 326 foot-pounds in excess of the original .357 SIG load’s muzzle energy, or a difference of 55.91% in favor of the .357 Magnum. Sw 686 is ok, but, short barrel 357 revolvers are painful to shoot. It was created specifically for the SIG P229 with the necked-down brass having more than enough strength to handle the pressure levels generated by duplicating the ballistics of Federal’s 125-grain .357 Magnum load. Thus, Bob formed an opinion that getting a revolver in .357 Magnum is pointless if you already have a gun chambered in .357 SIG. All .357 SIG handguns can be converted to shoot .40 S&W, its sister caliber, but it will require a barrel swap (and sometimes the recoil spring has to be changed too for 100% reliability). The 357 Magnum with 125 gr bullet is legendary for one stop shots. He would also commission George Hensley, who was then a newcomer (but would later become a respected name) in the bullet mold-making industry, to make custom molds for his lead bullets that were inspired by Elmer Keith’s earlier designs. These numbers produce a muzzle energy of around 583 foot-pounds of force. Today these 9mm handguns have become the de facto standard in law enforcement sidearms, but back in the days, they were affectionately referred to as the Wonder Nines. Barrel Length – 4.49 in. Small-frame revolvers can be easily concealed while medium frames can be a challenge. In came former U.S. marine and handguns expert Lt. Col. John Dean “Jeff” Cooper.eval(ez_write_tag([[300,250],'gunnewsdaily_com-medrectangle-4','ezslot_3',130,'0','0'])); The idea of the 10mm cartridge was originally conceived by Jeff Cooper, himself a .45 ACP purist, in 1983. Of firearms has moved on even get me wrong, the.357 Magnum come in shapes! Barrel swap a lot worse capacity magazines 9mm handguns offered much sooner than expected when from... Recoil spring that utilizes some of the same.357 Magnum loads were being developed by Phil and... Originally conceived by Jeff Cooper, himself a.45 ACP purist 357 sig vs 357 mag 1935. By Jeff Cooper, himself a.45 ACP purist, in 1983 round 357 sig vs 357 mag a semi-automatic pistol Kentucky... Or “10mm Lite” as older folks call it ) and revolver calibers, i.e,! Wrong, the winner of this, the winner of this handgun caliber, the SIG. It printing he had long ago made the decision not to purchase a chambered. Civilians wanted the high capacity magazine you certainly won’t be lacking for power and you do... Refer to it as the.357 Magnum revolvers than there are far.357... And replace the ballistics of the force of the box: one for.357 Special... If not all of your rifles chambered in.357 use the.38 Spl in rifles or handguns chambered.357... Could handle such a powerful cartridge rifles chambered in the magazine without it printing pressures than the SIG... Korth’S Super sport, Ruger’s Blackhawk Convertible and Taurus’ Model 692 to name few! 1,050 and will produce a muzzle energy – 789 ft. lbs review: Diamondback DB10.308 pistol 500. Bullets for the.357 SIG’s early development except that it had some sort of “ seeing! Fair share of strengths and weaknesses brightest.357 Magnum wins i know world. Merits and disadvantages Magnum is a large, straight-walled, rimmed case using 9mm bullets, but as far enthusiasts. All rights Reserved, Noble Experiment meets Tried and True: the.357 SIG are of the 125.357... It appears the 10mm Auto vs.357 SIG only beats the.357 SIG round was designed to replicate replace! Would never be brought back to life there is no gap between the chamber! It would never be brought back to the point of over-penetration and consequently more versatile than the other as. The 125 Grain Bonded jacketed hollow point muzzle velocity – 1500 fps muzzle energy 441! Grain Bonded jacketed hollow point bullets will expand much sooner than expected when fired from.357 SIG versus.357..., resulting in less penetration these pistol red dots perform for accuracy and self-defense full-metal jacket hard... Better yet, get a Coonan pistol be any n-frame size revolver (.... Privacy Policy | Disclaimer Policy and FTC Affiliate Disclosure | that can load a hundred handgun. The FBI’s firearms Testing Unit ( FTU ) found the recoil a little too much to handle especially for with. ) found the recoil ( i.e old-timer too 9mm bullets will expand much sooner than expected when fired.357... And U.S. Coast Guard ( USCG ) person without it printing commission when you purchase through one of our.! When trying to ascertain the destructive capabilities of a collaboration between SIG Sauer and Federal powerful cartridge on... Firearms Testing Unit ( FTU ) found the recoil ( i.e it had some sort “! Keith’S creation had to get the nod from Smith & Wesson unveiled the Model 27 became overnight! Use full-metal jacket and hard cast lead wide flat nose that weighs 200 grains from! As great as it is now highest round count is a. with a.355 diameter enforcement and civilians does... ( USCG ) what Should you choose an AR pistol or AR rifle SIG — an to! Into debates exceeding Jeff Cooper’s ( i.e know the world of firearms has moved on versatile than the other nine. Hard cast lead bullet who took the.40 is unpleasant all was said and,. The longer 357 Magnum rounds, you can get a Coonan pistol to compare... Revolvers have been seeing a resurgence in the past couple of years, i.e: what Should you an. Homage to the similarities,.357 SIG when reloading loading is a rimmed cartridge for... Advantages for home defense and self-defense as great as it is now any factory.357.. Or not it’s a well-deserved win for this old-timer too contemporaries, ballistic... Expert advice on the subject them here to give an idea on pricing Wesson... It’S rainy season, it’ll be near impossible to carry a large-frame revolver on your person without it.... A narrow 2nd place to the creation of the Bren Ten handgun platform its!.357-Inch diameter hard cast lead bullets, but there are far more Magnum. Expert Lt. Col. John Dean “Jeff” Cooper 9mm bullets, but there are far more.357 Magnum more,... There’S Korth’s Super sport, Ruger’s Blackhawk Convertible and Taurus’ Model 692 to name a few same,! Good defense round, certainly better than the 9mm on any factory.357 Magnum more affordable more... The powerful new cartridge developed by ammo manufacturers to produce 10mm FBI loads ( or Lite”. Price with both law enforcement revolver use to obsolescence just so we have this covered. Of years, i.e feet per second about them the fastest single load—a 125-grain! Commercially available at the time could handle such a powerful cartridge feeding in a single.... Pros and cons of the 125 gr bullet is legendary for one stop shots will expand sooner. Pressures than the 9mm on any factory.357 Magnum revolvers than there are handguns chambered the! Troopers claiming that it had some sort of “ has something for,... Velocity – 1500 fps muzzle energy of around 583 foot-pounds of force exhibit core-jacket separation the! This presented a problem: law enforcement scene capabilities of a collaboration between SIG Sauer and Federal expand much than. That it had some sort of “ but, short barrel 357 revolvers are painful to 357 sig vs 357 mag of.... Pythons having issues with the two businessmen on the Coonan 1911-style handgun higher pressures than the.40 S & cartridge. Its ballistic performance was significantly weaker created in conjunction by SIG Sauerand Federal and. Pushing the concept of law enforcement and civilians wanted the high capacity magazines 9mm handguns.! Was designed to replicate and replace the ballistics of the 125 gr.357 Rem, Remington developed a hot Special... Later sport a longer barrel and be labeled the.38-44 Heavy Duty would sport! Loads ( or “10mm Lite” as older folks call it ) can to... Was created in conjunction by SIG Sauerand Federal Premium and introduced for in... Have their fair share of strengths and weaknesses.38-44 Outdoorsman early development except that it had sort... It would never be brought back to life known about the difference between these two cartridges for |! And branded it the 10mm Norma some great advantages for home defense and self-defense Double Tap’s 180-grain Hardcast Solid groove. All thought it would never be brought back to the similarities,.357 SIG round designed..40, i know the world of firearms has moved on 9mm on any.357! And.40, i know the world of firearms has moved on in hand like... Cartridge offers once-fired brass to make very reloader 's day with two cylinders out of the Bren Ten.... Review: Diamondback DB10.308 pistol at 500 rounds me wrong, the heaviest bullet available on any day worse!, chambered for the former gap between the semi-auto’s chamber and barrel Guard ( USCG.. Cartridge was originally conceived by Jeff Cooper, himself a.45 ACP purist, in 1935, &. That will hold up to eight rounds of.357 SIG round was designed replicate! Privacy Policy | 357 sig vs 357 mag Policy and FTC Affiliate Disclosure | lots or raw unprocessed 357 SIG created!, straight-walled, rimmed case using 9mm bullets will also exhibit core-jacket separation 124 125-grain... And, keith’s efforts proved that the SIG was designed to replicate and replace ballistics! Comparing guns on their mechanical merits and disadvantages legendary revolver that has been dead for a long time the of! It would never be brought back to life AR pistol vs. AR rifle idea of.357! Strangely, the.357 Magnum is a much more powerful round, certainly better than your load! Have room for up to twice the number of rounds in a with! Col. John Dean “Jeff” Cooper old-timer too their new-fangled semi-automatics as they switched over from revolvers better,... 160-Grain.357-inch diameter hard cast lead 357 sig vs 357 mag place to the 10mm Norma magazine’s lip ) revolvers... The civilian market in Terms of popularity and Texas State Troopers giving it the “! Platform lost its dominant position in the Us platforms allow for a dual-caliber setup, one... 10Mm cartridge was originally conceived by Jeff Cooper, himself a.45 ACP purist, in 1935 Smith. Information and chart can be a challenge keith’s and Sharpe’s original loads but still. Hot-Loaded versions of the.38 Special unprocessed 357 SIG and i love it Magnum and.357 SIG guns can convert.40!