Warning
You must agree to the terms below before continuing.
By clicking the 'I Agree' button, I understand/accept and will agree to abide by the precautions and warnings outlined below.
You must agree to the terms below before continuing.
By clicking the 'I Agree' button, I understand/accept and will agree to abide by the precautions and warnings outlined below.
Powder left in the reloader's powder measure hoppers for extended periods, overnight or several days, should be avoided. Powder needs to be stored in original containers ONLY, when not in use. Numerous modern smokeless powders are double base in construction, containing both Nitrocellulose and Nitroglycerine.
Never mix any two powders regardless of type, brand, or source. Never substitute any smokeless powder for Black Powder or any Black Powder substitute.
Hodgdon® Powder, IMR® Powder and Winchester® Powder expressly disclaim any and all warranties with respect to any and all products sold or distributed by them, the safety or suitability thereof, or the results obtained including, without limitation, any implied warranty of merchantability or fitness for a particular purpose and/or any other warranty. Buyers and users assume all risk, responsibility and liability whatsoever for any and all injuries (including death), losses or damages to persons or property (including consequential damages), arising from the use of any product or data, whether or not occasioned by seller's negligence or based on strict liability or principles of indemnity or contribution. Hodgdon®, IMR® and Winchester® powders neither assume nor authorize any person to assume for it any liability in connection with the use of any product or data.
By clicking the 'I Agree' button, I understand/accept and will agree to abide by the precautions and warnings outlined above.
Subsonic loads refer to those whose velocity is less than the speed of sound. Not all "subsonic" loads are noted as such in the data, because the cartridge is not capable of producing supersonic velocity. An example is .32 S&W. All data in this caliber is subsonic but is not normally tagged with the name subsonic. In 9mm, most loading data are supersonic. Some data is shown that is subsonic. These loads are noted as subsonic. Most rifle loadings are all supersonic, so subsonic loads are specially down-loaded to stay below the speed of sound.
The noise that shooting makes has two components, the noise of the hot gases escaping the muzzle and sometimes flashing as they hit the atmosphere (muzzle blast), and in the case of supersonic loads the crack of the sonic boom as the bullet breaks the sound barrier. Subsonic loads do not have this second component of noise. As a side note, if a silencer is attached to the gun it will only suppress the muzzle-blast noise. It cannot suppress the supersonic crack. For this reason people shooting with a silencer prefer subsonic loads, even when shooting a rifle.