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. those proved to 960 bar (transducer) or, previously, 850 bar (crusher)), or magnum proof shotguns (i.e. I suspect it had more to do with more accurate pressure measurement methods when electronic transducers took over from copper cylinders getting hammered shorter. The pressure can't be increased, for there is no margin left. 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. If you … by ©RGI Media, Inc - Published with permission. 2. L6: 3.700 inch = 93.98 mm Barrel Length: 26.0 inch = 660.4 mm Predicted Data for Indicated Charges of the Following Powders. 44 Mag; 45 Colt ; 454 Casull ; 45-70; 540 BFR ONLY ; Terms & Conditions; Contact Page; Garrett's Commentaries. 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. Items that are in stock will ship within 7 days. Outside Diameter Details .640″ Chambered for 44 Magnum. 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. At The Range. Threaded 5/8-24 NF on Chamber and Muzzle. 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? These cartridges, if they are to be fired from standard proof shotguns (i.e. 57 50 49 .22-250 65 59 … Most pressure curves I've seen for black powder show peak pressure in about 90 - 125 microseconds, vs. smokeless in 150 - 250 microseconds. While most pistol cartridges will … 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 & .357 Magnum were both reduced at the same time. The SAAMI Maximum Average Pressure (MAP) is listed in both the Copper Units of Pressure (CUP) and the Pounds per Square Inch (PSI). Max loads for .44 Magnum that RRH's and DW's can shoot are in the 1550 ft-lbs energy range. (Now chambered full SAAMI Specifications) Rifle dimensions for our 44 Magnum Barrel Liners … Perhaps it … The SAAMI maximum pressure standard for the 44 SW special is 15,500 PSI. That said, their very heaviest .44s are not recommended; the slow-twist barrel may not … J. Barrel Liner Specifications . 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. +P vs. magnum cartridges. The SAAMI Maximum Average Pressure (MAP) is listed in both the Copper Units of Pressure (CUP) and the Pounds per Square Inch (PSI). 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. 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. SAAMI, QuickLoad, lever action rifles and other curiosities…. 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). 44 Remington Magnum Pistol SAAMI Chamber Reamer. I'm trying to find reloading data for the 300 gr Hornady XTP. 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. (1903-1938,) - 22,000 CUP (Exceeds SAAMI MAP) 44 Magnum - 22,100 up to 40,000 CUP PART 2, https://youtu.be/IKudU8QPdco The .44 Remington Magnum made the scene in 1956, while Ruger and Smith & Wesson vied for the distinction of being the … The classic “Skeeter Load” is a 240-250 grain LSWC with 7.5 grains of Unique in a 44 Special casing. Bullet Pull and Heavy 44 Loads; 44Mag and/or 45 Colt, Which way to go? In recent years the .44 Magnum… Compared with .22 Magnum, with its higher case capacity, peak pressure would probably mirror that of the CCI hot loads, up near the SAAMI … Driftwood Johnson, SASS #38283. pressures significantly in excess of the pressures associated with standard ammunition. It should be since the .44 Magnum operates at about 2.5 times the maximum SAAMI pressure of the .45 Colt. The industry Maximum average pressure for the 44 Magnum is 36,000 psi. Ken from … When do I anticipate developing some class ? Link to post Share on other sites. As a result, gunmakers offered fewer revolver models chambered in .44 Special for several years. Cartridges with +P Pressures, list both the standard and +P Pressure. At the time, SAAMI used a non-linear unit of measurement known as a “copper unit of pressure” (c.u.p.) Discussion Starter • #1 • Sep 17, 2014. Max chamber pressures are set at relatively lower levels corresponding to the reduced strength capabilities of firearms that are more than a century old. This is a CYA response as +P (plus pressure) would by definition exceed SAAMI MAXIMUM average pressure of 28,000 CUP. 59 50 51 .223 55 62 52 54 .219 Zip. (now, 17,000 p.s.i.) And they found out what the pressure really was. Mag. Regarding the .44-40, today’s reloading manuals usually list recipes … Standard pressure .38 Special was capped at around 18,900 c.u.p. The .44 Magnum is one hard-hitting round, but there’s a time when serious handgun hunters turn toward more powerful calibers. That is what it was designed for. The document even includes info on pressure terminology, headspace gauges, and test barrels. Thanx. Cartridges with +P Pressures, list both the standard and +P Pressure. 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. 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. But as for asking it to contain pressure far beyond that, NO THANKS! More details . Some cartridges do not have either a PSI or CUP listed, and these values are omitted. I've also tested lightly compressed loads in .270win (RL22) and 6.5CM (various powders). Matching Maximum Pressure: 56000 psi, or 386 Mpa These calculations refer to your specified settings in … The SAAMI pressure limit for the 44 Special is 15,500 psi. A. Smith. We are often asked how performance/pressure parameters were established for our 45-70 Hammerhead Ammo. CARTRIDGE: .300 Win. (now … COAL stands for … On a final note, all my … rc rcmodel, Dec 24, 2012 #11. 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. I thought I would attempt … Some cartridges do not have either a PSI or CUP listed, and they are omitted. My only compressed loads at present are a 44 Rem Mag Marlin 1894 loading with H110 and a 375H&H load with N150. SAAMI (Small Arms and Ammunition Manufacturers Institute) The organization that establishes firearm standards in the United States. 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 … The .44 Magnum is a serious handgun round and the second revolver cartridge to bear the name “Magnum” on its head stamp. What are the pressure signs to look for when loading widely accepted, yet highly suspected, high pressure .45-70 loads in the 1895 Marlin ? Outside Diameter Details .645″ for 20 & 28″.620″ for 11″ and Shorter Liners. All the top-end reloading data with pressure-tested data shows .44 Magnum loads maxing out at 35,000 psi (or 38,000 CUP). There are two questions I receive with some frequency 1. All weapons manufactures adhere to the same standards. 44 Magnum Barrel Liners / Blanks. 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. All Taurus revolvers can shoot +p except the M856, but is .44 magnum SAAMI recognized? 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. Also excessive pressure can be caused by brass being to long. 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. .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. The way the cases looked in the cylinder seems to indicate that the problem might be in only one or two chambers. The trim to length is equivalent to the minimum case length. to evaluate internal case pressures (now superseded by the more precise pounds per square inch, or p.s.i.). Condition: New product. Founded in 1926, SAAMI … 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. Depending on the method of pressure testing the manufacturer uses. The first level is up to the actual SAAMI … As for compressed loads, I haven't seen issues. I'd like to use the Deerslayer this fall for whitetail. That load will usually exceed the SAAMI pressure … 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) … Both are within book values but compressed to around 105-110% load density. Barrel Liner Specifications. Jaywalker Member. The SAAMI specs call for a limit on the .44 Magnum of 36k psi (40k CUP). It is all too easy to … 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. (Refer to Hodgdon’s load data.) 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. Joined: May 28, 2003 Messages: … and the higher pressure .38 Special +P was capped at about 22,200 c.u.p. Chambered for 44 Magnum … 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. Just can't seem to find reloading info for the carbine, but plenty for handguns. These … In .44 Mag, that means any load over about 1250 ft-lbs of energy, or anything in the +P or +P+ category. 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. Perhaps the hotter CCI's take the pressures up into the SAAMI max range in order to achieve their higher velocities. When he talks, people … The .44 Magnum has earned a reputation as one of the most powerful handgun rounds available for home defense or hunting. Ruger would discourage any one from exceeding 36,000 psi. 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. 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. If you can take it, the gun can take it. So most manufacturers have downloaded some of their ammo, and you'll find that a lot of today's published reloading data is … It's capable of taking down extremely large game. 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 … Some … 41 37 .225 Win. Rougher is -.009 thou, unless noted. View All; CHAMBER PRESSURE & THE MODERN 45-70 LEVER-GUN. (SAAMI) Bullet: .308, 180, Flatline - F T/R Useable Case Capaci: 81.648 grain H2O = 5.301 cm³ Cartridge O.A.L. 3 Posts . Pressures, Factory Loads 44-40 H.V. If not in … Today’s SAAMI pressure limits for the .44-40 and many other vintage blackpowder rounds are typically specified in copper units of pressure (CUP). Driftwood Johnson, SASS #38283 1,042 Posted June 21, 2011. Load density same time out what the pressure really was 2003 Messages …! 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