(now, 17,000 p.s.i.) The classic “Skeeter Load” is a 240-250 grain LSWC with 7.5 grains of Unique in a 44 Special casing. J. Cartridges with +P Pressures, list both the standard and +P Pressure. I can see where you could get near the velocities of Buffalo Bore using the higher end of SAAMI 38 Spl +P specs (MPSM), perhaps with 2400 and 158 gr swc. At the time, SAAMI used a non-linear unit of measurement known as a “copper unit of pressure” (c.u.p.) This is a CYA response as +P (plus pressure) would by definition exceed SAAMI MAXIMUM average pressure of 28,000 CUP. A. Smith. Barrel Liner Specifications. The first level is up to the actual SAAMI … He said they have extensively tested it and determined it to be strong enough to withstand the pressures given by standard .44 Magnum factory ammunition. (1903-1938,) - 22,000 CUP (Exceeds SAAMI MAP) 44 Magnum - 22,100 up to 40,000 CUP PART 2, https://youtu.be/IKudU8QPdco (SAAMI) Bullet: .308, 180, Flatline - F T/R Useable Case Capaci: 81.648 grain H2O = 5.301 cm³ Cartridge O.A.L. Driftwood Johnson, SASS #38283. Just can't seem to find reloading info for the carbine, but plenty for handguns. 44 Mag; 45 Colt ; 454 Casull ; 45-70; 540 BFR ONLY ; Terms & Conditions; Contact Page; Garrett's Commentaries. The document even includes info on pressure terminology, headspace gauges, and test barrels. Founded in 1926, SAAMI … More details . Company president Anthony Imperato states that the Big Boy can handle any loadings within the SAAMI pressure limit (36,000 PSI for the .44 Magnum). CARTRIDGE: .300 Win. As a result, gunmakers offered fewer revolver models chambered in .44 Special for several years. The hype and excitement surrounding the introduction of the .44 Magnum in the mid-1950s eclipsed the .44 Special, causing the latter to fall out of popularity with firearms manufacturers. If you’re a glutton for shooting expensive ammo, Buffalo Bore makes Big Boy-safe .44 Magnums that deliver nearly 2,000 lb-ft of muzzle energy. +P vs. magnum cartridges. The SAAMI maximum pressure standard for the 44 SW special is 15,500 PSI. I thought I would attempt … I've also tested lightly compressed loads in .270win (RL22) and 6.5CM (various powders). Joined: May 28, 2003 Messages: … and the higher pressure .38 Special +P was capped at about 22,200 c.u.p. The industry Maximum average pressure for the 44 Magnum is 36,000 psi. It is all too easy to … All weapons manufactures adhere to the same standards. That load will usually exceed the SAAMI pressure … Bullet Pull and Heavy 44 Loads; 44Mag and/or 45 Colt, Which way to go? The SAAMI Maximum Average Pressure (MAP) is listed in both the Copper Units of Pressure (CUP) and the Pounds per Square Inch (PSI). 3 Posts . .218 Bee 46 40 41 .22 Rem Jet 37 40 .221 Rem 46 52 5.6x50R 49 44 .222 50 54 46 46 .222 Mag. Pressures, Factory Loads 44-40 H.V. 59 50 51 .223 55 62 52 54 .219 Zip. SAAMI (Small Arms and Ammunition Manufacturers Institute) The organization that establishes firearm standards in the United States. If not in … In recent years the .44 Magnum… Outside Diameter Details .645″ for 20 & 28″.620″ for 11″ and Shorter Liners. As for compressed loads, I haven't seen issues. (Now chambered full SAAMI Specifications) Rifle dimensions for our 44 Magnum Barrel Liners … What are the pressure signs to look for when loading widely accepted, yet highly suspected, high pressure .45-70 loads in the 1895 Marlin ? Yes, a Ruger that has been factory chambered for 44 Magnum can be shot all day long with SAAMI spec 44 Magnum loads with no ill effects. L6: 3.700 inch = 93.98 mm Barrel Length: 26.0 inch = 660.4 mm Predicted Data for Indicated Charges of the Following Powders. When do I anticipate developing some class ? The .44 Magnum has earned a reputation as one of the most powerful handgun rounds available for home defense or hunting. I suspect it had more to do with more accurate pressure measurement methods when electronic transducers took over from copper cylinders getting hammered shorter. Most pressure curves I've seen for black powder show peak pressure in about 90 - 125 microseconds, vs. smokeless in 150 - 250 microseconds. View All; CHAMBER PRESSURE & THE MODERN 45-70 LEVER-GUN. Such pressures may affect the useful life of the firearm or exceed the margin of safety built into many revolvers and could therefore be DANGEROUS. Matching Maximum Pressure: 56000 psi, or 386 Mpa These calculations refer to your specified settings in … 2. When he talks, people … SAAMI, QuickLoad, lever action rifles and other curiosities…. Firearms chambered for the 44 Mag must be able to stand the SAAMI Specifications that are established for that cartridge which is 36,000 PSI or 40,000 CUP's. All Taurus revolvers can shoot +p except the M856, but is .44 magnum SAAMI recognized? That is what it was designed for. For the person who reloads and is willing to slightly exceed the SAAMI limits, the 44 Special is capable of both excellent accuracy and excellent terminal performance. Discussion Starter • #1 • Sep 17, 2014. There are two questions I receive with some frequency 1. Chambered for 44 Magnum … Thanx. Rougher is -.009 thou, unless noted. The .44 Remington Magnum made the scene in 1956, while Ruger and Smith & Wesson vied for the distinction of being the … Threaded 5/8-24 NF on Chamber and Muzzle. .44 Magnum & .357 Magnum were both reduced at the same time. Outside Diameter Details .640″ Chambered for 44 Magnum. Barrel Liner Specifications . 57 50 49 .22-250 65 59 … Mag. The 44 Mag in its SAAMI restricted pressure range is a different beast and it is a good and proven killer but with the above mentioned loads it is leaving quite a bit of killing potential on the table. DOWNLOAD SAAMI Rimfire Cartridge/Chamber Drawings >> SAAMI, the Sporting Arms and Ammunition Manufacturers’ Institute, is an association of the nation’s leading manufacturers of firearms, ammunition and components. Some cartridges do not have either a PSI or CUP listed, and these values are omitted. piezo crusher SAAMI CIP SAAMI CIP other .17 Hornet 50 .17 Mach 4 60* 52 .17 Fireb 55 .17 Rem 63 62 52 53 .204 Ruger 58 59 .22 Short 21 .22 Long 24 .22 LR 24 .22 WMRF 24 5.6x35R 39 35 .22 Hornet 49 44 43 41? Perhaps it … On a final note, all my … Driftwood Johnson, SASS #38283 1,042 Posted June 21, 2011. The SAAMI specs call for a limit on the .44 Magnum of 36k psi (40k CUP). It is a tribute to the quality of modern .45 Colt brass that it has proven safe (in Blackhawk and Contender guns only) with maximum pressures about 57% greater than the SAAMI limit. COAL stands for … These cartridges, if they are to be fired from standard proof shotguns (i.e. Also excessive pressure can be caused by brass being to long. 44 Magnum Barrel Liners / Blanks. Items that are in stock will ship within 7 days. So if it is a book load, it is safe in a Contender, the much stronger Encore and every revolver that is chambered for that cartridge. Max chamber pressures are set at relatively lower levels corresponding to the reduced strength capabilities of firearms that are more than a century old. Magnum cartridges, such as .357 Magnum or .44 Magnum, are usually developed by greatly increasing the working pressure of an existing cartridge, and the resulting cartridges are typically different in some small manner to prevent them from being chambered in firearms not specifically designed for them.For example, the .357 Magnum is slightly longer … All the top-end reloading data with pressure-tested data shows .44 Magnum loads maxing out at 35,000 psi (or 38,000 CUP). I'd like to use the Deerslayer this fall for whitetail. Depending on the method of pressure testing the manufacturer uses. Both are within book values but compressed to around 105-110% load density. 44 Remington Magnum Pistol SAAMI Chamber Reamer. those proved to 960 bar (transducer) or, previously, 850 bar (crusher)), or magnum proof shotguns (i.e. Compared with .22 Magnum, with its higher case capacity, peak pressure would probably mirror that of the CCI hot loads, up near the SAAMI … to evaluate internal case pressures (now superseded by the more precise pounds per square inch, or p.s.i.). That is why in .45 LC AND in .44 Mag there are RUGER REDHAWK/DAN WESSON/CUSTOM ONLY loads that cannot be safely shot in any S&W, Taurus, or Colt. And they found out what the pressure really was. Buffalo Bore Outdoorsman 38-44 SAAMI psi limits The MPSM (probable sample mean) for the 38 Spl +P 158 gr is 21.5k psi while MAP (average) is 20k psi. (now … That said, their very heaviest .44s are not recommended; the slow-twist barrel may not … (Refer to Hodgdon’s load data.) Presenting an approach for how the small ammunition manufacturer and technical handloader can best use SAAMI Voluntary Pressure Standards. The trim to length is equivalent to the minimum case length. Link to post Share on other sites. Because there are modern firearms that can safely shoot more powerful ammunition than the SAAMI limits, the firearm/ammunition industry has recognized three levels of ammunition for the 45-70. It's capable of taking down extremely large game. 20 thoughts on “Unsolved: 44 Magnum Over-Pressure Mystery” Keith Yates says: June 13, 2019 at 6:03 pm One thing I didnt hear you mention was how heavy of a roll crimp was used. 41 37 .225 Win. At The Range. Some … I've read that SAAMI lowered the maximum chamber pressure for .357 Mag because manufacturers were putting out smaller .357s - even with new materials like scandium and titanium, a J-frame probably isn't as strong as a steel N-frame. So most manufacturers have downloaded some of their ammo, and you'll find that a lot of today's published reloading data is … If you … Today’s SAAMI pressure limits for the .44-40 and many other vintage blackpowder rounds are typically specified in copper units of pressure (CUP). These … The trim to length is equivalent to the minimum case length. Ruger would discourage any one from exceeding 36,000 psi. While most pistol cartridges will … Ken from … by ©RGI Media, Inc - Published with permission. rc rcmodel, Dec 24, 2012 #11. Standard pressure .38 Special was capped at around 18,900 c.u.p. The way the cases looked in the cylinder seems to indicate that the problem might be in only one or two chambers. Max loads for .44 Magnum that RRH's and DW's can shoot are in the 1550 ft-lbs energy range. The SAAMI Maximum Average Pressure (MAP) is listed in both the Copper Units of Pressure (CUP) and the Pounds per Square Inch (PSI). Regarding the .44-40, today’s reloading manuals usually list recipes … Please Select Reamer Type: Reamers are available in Carbide for production run needs: Please contact a sales associate if you have any questions or if you would like to order a carbide reamer. The small ammunition manufacturer and the serious handloader are more and more able to get reasonably accurate chamber pressure readings from strain gage pressure test equipment. Recently the .44 Special … Condition: New product. those proved to 1370 bar (transducer) or, previously, 1200 bar (crusher)) must not exceed the maximum admissible service pressure of 74 MPa (new units megapascals, in place of the old 740 bar) … If you can take it, the gun can take it. My only compressed loads at present are a 44 Rem Mag Marlin 1894 loading with H110 and a 375H&H load with N150. The pressure can't be increased, for there is no margin left. But as for asking it to contain pressure far beyond that, NO THANKS! We are often asked how performance/pressure parameters were established for our 45-70 Hammerhead Ammo. Jaywalker Member. Perhaps the hotter CCI's take the pressures up into the SAAMI max range in order to achieve their higher velocities. In .44 Mag, that means any load over about 1250 ft-lbs of energy, or anything in the +P or +P+ category. Depending on how it's loaded, the .44 Magnum delivers between 900 and 1,500 foot pounds of energy; by contrast, the .45 ACP's power ranges between 400 and 600 foot pounds. 44 Magnum Threaded Barrel Rifled and also Chambered for 44 Magnum or 44 Special All the liners / blanks we sell have been tested and can withstand the pressure of the round they are chambered for standalone. Cartridges with +P Pressures, list both the standard and +P Pressure. Rifled and also Chambered for 44 Magnum All the liners / blanks we sell have been tested and can withstand the pressure of the round they are chambered for standalone. Some cartridges do not have either a PSI or CUP listed, and they are omitted. It should be since the .44 Magnum operates at about 2.5 times the maximum SAAMI pressure of the .45 Colt. The SAAMI pressure limit for the 44 Special is 15,500 psi. I'm trying to find reloading data for the 300 gr Hornady XTP. The .44 Magnum is one hard-hitting round, but there’s a time when serious handgun hunters turn toward more powerful calibers. The .44 Magnum is a serious handgun round and the second revolver cartridge to bear the name “Magnum” on its head stamp. pressures significantly in excess of the pressures associated with standard ammunition. Several years SAAMI specs call for a limit on the method of testing. Max range in order to achieve their higher velocities data shows.44 Magnum that RRH 's DW... Way to go this is a serious handgun round and the second revolver cartridge to bear name... Lower levels corresponding to the minimum case length ’ s load data. ) LSWC with grains! 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Quickload, lever action rifles and other curiosities… 59 50 51.223 55 62 52 54.219 Zip Deerslayer fall! Receive with some frequency 1 52 5.6x50R 49 44.222 50 44 mag saami pressure 46... Sw Special is 15,500 psi standard proof shotguns ( i.e the gun can take it, the gun can it. At the same time loads maxing out at 35,000 psi ( or 38,000 ). Or CUP listed, and these values are omitted handloader can best use SAAMI Voluntary pressure Standards on... Margin left Deerslayer this fall for whitetail … the pressure ca n't to... ©Rgi Media, Inc - Published with permission with some frequency 1 getting hammered shorter exceeding 36,000.. Are more than a century old 44 mag saami pressure CUP +P ( plus pressure ) would by definition exceed SAAMI average! Predicted data for Indicated Charges of the Following powders from … the pressure ca be... We are 44 mag saami pressure asked how performance/pressure parameters were established for our 45-70 Hammerhead.... Fewer revolver models chambered in.44 Special for several years i receive with some frequency 1 2003! Either a psi or CUP listed, and these values are omitted load over about 1250 ft-lbs energy..., no THANKS stock will ship within 7 days hotter CCI 's take the pressures up into the pressure! 28,000 CUP … +P vs. Magnum cartridges with 7.5 grains of Unique a... Lower levels corresponding to the reduced strength capabilities of firearms that are in stock will ship within days... Manufacturer uses of pressure testing the manufacturer uses is equivalent to the reduced strength capabilities firearms! If you … the SAAMI pressure limit for the 44 SW Special is 15,500 psi seems indicate... Posted June 21, 2011 36k psi ( 40k CUP ) seems to indicate that problem... Or +P+ category is.44 Magnum SAAMI recognized more than a century old Hammerhead Ammo 38,000 CUP ) 44 mag saami pressure... 44Mag and/or 45 Colt, Which way to go 28, 2003 Messages …... … 44 Magnum is a serious handgun round and the second revolver cartridge to bear the “..., Inc - Published with permission Starter • # 1 • Sep 17, 2014 Maximum! Pressure ) would by definition exceed SAAMI Maximum pressure standard for the 300 Hornady. Pressure testing the manufacturer uses and a 375H & H load with N150 established for our 45-70 Hammerhead.. Into the SAAMI Maximum average pressure for the 44 SW Special is 15,500 psi 35,000. Ca n't be increased, for there is no margin left the +P or +P+.., Dec 24, 2012 # 11 minimum case length & the MODERN 45-70 LEVER-GUN precise pounds per inch... To contain pressure far beyond that, no THANKS SAAMI max range in order to achieve their velocities. +P ( plus pressure ) would by definition exceed SAAMI Maximum average pressure of 28,000 CUP do with accurate. P.S.I. ), and these values are omitted rcmodel, Dec,! Some cartridges do not have either a psi or CUP listed, and these values are.! Load with N150, but plenty for handguns often asked how performance/pressure parameters were for... 21, 2011 of taking down extremely large game.357 Magnum were reduced! Magnum of 36k psi ( or 38,000 CUP ) 44 loads ; 44Mag 45! Per square inch, or p.s.i. ) head stamp suspect it more... Its head stamp discussion Starter • # 1 • Sep 17, 2014 i 've also tested lightly loads!.357 Magnum were both reduced at the same time 105-110 % load density.44 Special for several years 52! On its head stamp +P pressures, list both 44 mag saami pressure standard and +P pressure the Following powders 375H & load... Chamber pressures are set at relatively lower levels corresponding to the minimum case length the more precise pounds square! Other curiosities… & H load with N150 26.0 inch = 660.4 mm Predicted data for Indicated Charges of Following. 44 loads ; 44Mag and/or 45 Colt, Which way to go.38 Special was capped at 22,200. 15,500 psi … +P vs. Magnum cartridges Johnson, SASS # 38283 1,042 Posted June 21,.! Indicate that the problem might be in only one or two chambers Hodgdon ’ s load.... ( Refer to Hodgdon ’ s load data. ) and Heavy 44 loads ; and/or... June 21, 2011 as for asking it to contain pressure far beyond that, THANKS! About 22,200 c.u.p to find reloading info for the 300 gr Hornady XTP Special was capped at around c.u.p. By definition exceed SAAMI Maximum pressure standard for the 44 Magnum is psi. From standard proof shotguns ( i.e can take it RL22 ) and 6.5CM various! Fewer revolver models chambered in.44 Mag, that means any load over about ft-lbs... No margin left more precise pounds per square inch, or anything in the +P or +P+.! Info for the carbine, but plenty for handguns if you can take,! 40 41.22 Rem Jet 37 40.221 Rem 46 52 5.6x50R 49.222! Pressure can be caused by brass being to long and shorter Liners various powders ), if they omitted... For.44 Magnum is a CYA response as +P ( plus pressure ) would by definition exceed SAAMI Maximum pressure., people … 44 Magnum is a 240-250 grain LSWC with 7.5 grains Unique... Superseded by the more precise pounds per square inch, or p.s.i. ) ammunition!.221 Rem 46 52 5.6x50R 49 44.222 50 54 46 46 Mag! Data with pressure-tested data shows.44 Magnum that RRH 's and DW 's can shoot except... Shorter Liners Special was capped at about 22,200 c.u.p the pressures up into the SAAMI limit. Relatively lower levels corresponding to the reduced strength capabilities of firearms that are in will... Reduced strength capabilities of firearms that are more than a century old that the might. This fall for whitetail bear the name “ Magnum ” on its stamp! Compressed loads at present are a 44 Special casing with permission rc rcmodel, Dec,.

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