Winchester WinClean 244 is a ball powder developed for medium handgun loads. It is ideally suited to 38 Special, 45 Auto, and 9mm standard loads. Consistency, low flash, and a broad range of applications make this powder a choice for any handgun cartridge loader. Since it is a ball powder, it features precise metering. And with the WinClean additive, this powder is cleaner burning and reduces copper fouling.