I am in the process of adding bullet lengths to the library so that the drift lbs., and at 300 yards 1964 ft. lbs. So my question is do I have to trim them to 2.530 or are they fine at 2.535? The cartridge is the same length as the .280 Remington, both of which are longer than the .30-06 Springfield.The .270, .280, and .30-06 were all derived from the .30-03 parent case. The 270 Winchester is clearly one of the shooting sport’s premier big game cartridges. So it is possible that the .270 Win with it's power and range could be considered the better bullet. I need them measured with a bullet comperator to work. The standard 22" sporters which dominated the market place during the 1980’s and 1990’s will normally achieve 3100fps, 3000fps and 2900fps respectively. 5.8–7.1 grams (90–110 gr) bullets: animals smaller than coyotes. Nearly all rifles chambered for 270 caliber are fitted with 1:10” twist barrels. help to populate the length values. .270 Winchester-Hornady SP InterLock, .270 Winchester-Winchester XP3, .270 Winchester Short Magnum-CorBon DPX, .270 Winchester-Remington Swift A-Frame PSP, .270 Winchester Short Magnum-Winchester XP3, .270 Winchester-Remington Bronze Point, .270 Winchester Short Magnum-Nosler AccuBond, .270 Winchester-Hornady LM InterLock, .270 Winchester-Norma Soft Point, .270 Winchester-RWS Cone Point, .270 Winchester Short Magnum-Federal Nosler Partition, .270 Winchester-Hornady BTSP InterLock, .270 Winchester-Sellier & Bellot PTS, .270 Winchester Short Magnum-Winchester Ballistic Silvertip, .270 Winchester-Winchester Power Point. the length (measure a few and average) and send me the length so that I can The writer Jack O'Co… The spent cases I have are no longer than 2.535. Common bullet weight recommendations for shooting different game are as follows: Recent introductions of low-drag bullets suited to the .270 Winchester such as the Nosler Accubond Long-Range, Hornady ELD-X and Matrix long range bullets are promoting renewed interest in the cartridge among long range hunters. *Casing image above is an artist rendering and not a real photo of .270 Winchester Ballistics cartridge. The 270 Winchester Short Magnum or 270 WSM is a short, unbelted, magnum cartridge created by necking down the .300 Winchester Short Magnum and fitting it with a .277 caliber bullet. 270 Weatherby Magnum Load Data; 7mm Mauser (7×57) Load Data; 7mm-08 Remington Load Data; 284 Winchester Load Data; 280 Remington Load Data ; 7mm Rem Short Action Ultra Magnum Load Data; 280 Ackley Improved Load Data; 7mm Winchester Short Magnum Load Data; 7mm Remington Magnum Load Data; 7mm Weatherby Magnum Load Data; 7mm Shooting Times Westerner (STW) Load Data; 7mm … Right click on the image of the load data and use save as. NOTE: I am not claiming that the Miller stability and Litz drift formulas are History tells us that cartridges used by the military are later used by it's civilians. The US Military picked up the 30-06 years before as a primary round in 1905, and it was used in both World Wars, the Korean War, and Vietnam. For 150 grain bullets the Nosler figures are 54.0 grains of IMR 4350 for a MV of 2813 fps, and up to 58.0 grains of the same powder for a MV of 2992 fps. Notable exceptions being the WSM is chambered in a short action and ordinarily utilises a 24" barrel where the Weatherby is typically chambered in rifles with a 26" barrel. The fifth edition of the Nosler Reloading Guide shows that 59.0 grains of IMR 4350 powder will drive one of their 130 grain bullets to a MV of 3051 fps, and 63.0 grains of the same powder will give a 130 grain bullet a MV of 3294 fps. So why is the .270 Win not the most popular round? The correct name for the cartridge, as listed by the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI), is 270 WSM, without a decimal point. At the range and in the field, this cartridge works well with a variety of bullet / powder combinations. update the database. The .270 WSM and the .300 WSM are the most successful and popular of the short magnum rifle cartridges and the most widely available in terms of both ammunition and rifles. While not an immediate success, over the succeeding decades and especially in the post-World War II period, the .270 Winchester attained great popularity among gun owners, metallic silhouette rifle shooters and hunters, ranking it among the most popular and widely used cartridges worldwide. With modern bullets and optics, it is easily a 1,000 yard cartridge. The .270 Winchester is a rifle cartridge developed by Winchester Repeating Arms Company in 1923 and unveiled in 1925 as a chambering for their bolt-action Model 54. Planning on reloading some .270 win and looking through my Hornady reloading manual it shows a case trim length on 2.530 and a max case of 2.540. a shorter action resulting in a more compact rifle if desired. I am also contacting manufacturers The round was moderately popular for hunting medium to large game as its a bit more potent than the 30-30 and the 30-06. There is a very good selection of bullets in .270 caliber, ranging from about 90-180 grains. There is a very good selection of bullets in .270 caliber, ranging from about 90-180 grains. The lead tip on the Sierra GKs I like almost never give a consistent measurement from bullet to bullet, and Hornady SSTs will even vary as much as .010" from bullet to bullet. of energy remains. Cartridge Type: Rifle Height: 2.54" Width: 0.473" Average FPS: 3536 Average Energy: 3775 Average Gr: 136 Recoil: 1.82 Power Rank: 4.81 of 20 The .270 Winchester was designed somewhere in the 1920's and was released by Winchester. Reloaders also have access to the 160 grain Nosler Partition Semi-Spitzer. Access to the online database is FREE. Internationally, firearms manufacturers now offer this chambering in all firearm varieties: bolt-actions, single-shots, lever-actions (such as the Browning BLR), pump-actions (such as the Remington 7600), autoloaders (such as the Remington 7400), and even a few double rifles.[6]. 270 Winchester Load Data; 270 Winchester Short Magnum (WSM) Load Data; 270 Weatherby Magnum Load Data; 7mm Mauser (7×57) Load Data; 7mm-08 Remington Load Data; ... 270 Caliber Bullets. for their help. And the short case of the WSM calibers works against the heaviest (long) bullets. The correct name for the cartridge, as listed by the Sporting Arms and Ammunition Manufacturers' Institute (SAAMI), is 270 WSM, without a decimal point. [citation needed], "Nosler's Model 48 Sporter and the .270 WSM", Sporting Arms and Ammunition Manufacturers' Institute, http://www.chuckhawks.com/short_magnums.htm, https://en.wikipedia.org/w/index.php?title=.270_Winchester_Short_Magnum&oldid=925055963, Articles with unsourced statements from October 2019, Creative Commons Attribution-ShareAlike License, This page was last edited on 7 November 2019, at 15:38. The .325 WSM is in a league of its own in North America as the 8 mm caliber has not become commonplace. This bullet has a sectional density of .298 and is shorter than a spitzer bullet of the same weight. Here are some specifications of interest to .270 WSM reloaders: bullet diameter .277", maximum COL 2.86", maximum case length 2.10". While we have went to great lengths to make sure that it's as accurate as possible this rendering should not be used to generate specs for casings. While it is true that a .270 Winchester case can be formed from a .30-06 Springfield case, the case length of a .30-06 is 63.3 millimetres (2.494 in) while the case length of a .270 is 64.5 millimetres (2.540 in), the same as a .30-03 Springfield. [3] Renowned gunsmith Harold Fredd considers the 270 to be one of the most versatile cartridges for North American hunting and has recently started promoting it for small to medium sized plains games.