Winchester Load Data

Winchester WinClean 244 is a modern double-base spherical (BALL) handgun powder introduced to provide clean-burning, low-flash performance across a wide range of popular pistol cartridges. Its burn rate is similar to Winchester 231/HP-38, making it well suited for standard-pressure 9mm Luger, .38 Special, .40 S&W, and .45 ACP target and defensive loads. The fine spherical granules meter exceptionally well through progressive powder measures, ensuring consistent charge weights. WinClean additives reduce copper fouling and airborne lead while leaving less residue in the firearm. Although versatile and economical, W244 is intended for medium handgun loads rather than full-power magnum revolver cartridges.

Winchester AutoComp is a smokeless pistol powder developed specifically for high-performance semi-automatic handgun cartridges. As its name suggests, it was engineered with competitive shooting in mind, particularly for action shooting sports such as IPSC and USPSA, where reliable cycling, consistent velocities, and controlled recoil are critical. AutoComp is a spherical (ball) powder, which typically meters very well through progressive powder measures, making it well suited for high-volume loading. In terms of burn rate, AutoComp falls in the medium pistol range. It is commonly used in cartridges such as 9mm Luger, .38 Super, .40 S&W, and other similar semi-auto handgun rounds. The powder was formulated to help produce consistent performance and reliable function in compensated pistols, where maintaining sufficient gas pressure to drive the compensator is important. This characteristic made it popular among shooters developing “major power factor” competition loads.

inchester StaBAL Match is a temperature-insensitive, double-base, BALL Powder, stable in extreme-hot or -cold conditions. This powder provides optimal loading density in cartridges appropriate for the burn speed, which is ideal for high-BC heavy for caliber bullets in 223 Remington, 224 Valkyrie, 22-250 Remington, 308 Winchester, 30-06 and many more. Typical of a BALL powder, precise metering contributes to consistent velocity and pressure with lower standard deviations, ingredients that are paramount to match grade accuracy!

Winchester StaBALL HD is a temperature-insensitive, double-base, BALL Powder, stable in extreme-hot or -cold conditions. This slow-burning magnum powder provides optimal loading density in large capacity magnum cartridges appropriate for the burn speed, which is ideal for 6.5 PRC, 7MM Remington Mag, 300 PRC and many more. Typical of a BALL powder, precise metering contributes to improved velocity and lower standard deviations, ingredients that are paramount to match grade accuracy! This REACH-compliant, “environmentally green” propellant has copper fouling reducer additives, which contribute to shooting sessions without cleaning the bore. Velocity levels obtainable, depending on the cartridge, are 75-100fps greater than other propellants in its class. Thus, the StaBALL family provides Stability, Precision and Speed. Made in the USA.

Winchester 231 is a ball powder, one of the most popular handgun propellants in history. It is ideally suited to 38 Special, 45 Auto, and 9mm standard loads. Consistency, clean burning, low flash, and a broad range of applications make this powder a choice for any handgun cartridge loader.

Winchester 572 is a BALL POWDER® strategically designed to optimize a myriad of shotshell and handgun loads. First, 572 has the correct burn rate to create the famous 3-¼-dram equivalent, 1-¼ oz, (1330 FPS) 12-gauge factory Winchester load with any brand case! Back Fence competitors and pheasant hunters will be delighted. Winchester 572 also provides superb clay target or field loads in 20- and 28-gauge, and, outstanding field loads for the wonderful 16 gauge. In addition, 572 has a vast number of pistol applications, ranging from the 25 ACP to 45 ACP, and all popular calibers in between.

Winchester 296 is a ball powder developed for large handgun loads. An ideal solution for loading 357 Magnum, 44 Magnum, and even 410-bore shotshell ammunition, its high loading density provides optimal velocity. Winchester 296 is also recommended for 410-bore AA loads.

Winchester 748 is a ball powder and the choice for loading 223 Remington cartridges. The low-flame temperature extends barrel life compared to other similar speed powder. It is also ideal for a wide variety of centerfire rifle loads, including 222 Remington, 30-30 Winchester, 30 Winchester, and up to 485 Winchester Magnum.

Winchester StaBALL 6.5 is the worlds first temperature-insensitive BALL Powder, stable in extreme-hot or -cold conditions. It provides optimal loading density in cartridges appropriate for the burn speed, which is ideal for 6 Creedmoor, 6GT, 6.5 Creedmoor, 7MM-08, 270 Winchester and many more. Typical of a ball powder, precise metering contributes to improved velocity and pressure standard deviations, ingredients that are paramount to match grade accuracy! This REACH-compliant, environmentally green propellant has copper fouling reducer additives, meaning longer durations of competition and field shooting without having to clean the bore. Precision accuracy throughout the match! Velocity levels obtainable, depending on the cartridge, are 30-200 fps greater than other propellants in its class. Stability, Precision and Speed, says Winchester StaBALL 6.5 is the Best of the Best!

Winchester 760 is a ball powder designed to duplicate the 30-06 Springfield factory load ballistics. With ideal flow characteristics that give 760 an advantage over other propellants with similar burn rates, it is recommended as for 22-250 Remington, 300 Winchester Magnum and 300 WSM.

Here’s a 200-word summary of Winchester Supreme 780 based on available information: ⸻ Winchester Supreme 780 is a smokeless rifle powder originally developed and used by Winchester in its Factory Supreme ammunition lines for medium to magnum rifle cartridges. It is a ball (spherical) propellant, meaning the powder granules are roughly spherical in shape, which generally helps with smooth metering and consistent charge weights — an advantage for both factory loading and handloading alike. 780 has a burn rate comparable to Hodgdon H4831, placing it in a medium-to-slow category suitable for larger rifle cases. Historically, Supreme 780 was used in Winchester factory loads for calibers such as .243 Winchester, .270 Winchester, and .300 Winchester Magnum, among others, and provided good velocity and accuracy characteristics for those cartridges. It was intended as a magnum-class powder bridging the gap between faster propellants and very slow magnum powders. As a handloading powder, Winchester 780 was valued for its consistent flow, reliable burn characteristics, and accuracy potential. However, like many Winchester propellants distributed through Hodgdon, availability has varied over time, and 780 has been discontinued or hard to find in recent years, prompting reloaders to substitute comparable powders such as H4831 or others in that burn-rate range. Because it was formulated to match the performance of Winchester’s own factory ammunition, handloader manuals caution against exceeding published loads and emphasize verifying data from reliable reloading sources when using this powder.