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9mm Luger +P. Warning: Bullet selections are specific, and loads are not valid with substitutions of different bullets of the same weight. Variations in bullet length will alter net case capacity, pressure and velocity.
25 lis 2017 · SAAMI specs standard pressure at 35,000 and 38,500 for +P. So it looks like the +P+ gives you 40 FPS in trade for running toward proof load pressure. (By the way, I think these numbers are accurate.)
4 sie 2011 · While developing a load for a 9mm sub-gun, I found this pressure calculator. You fill in all the input columns and it automatically calculates the cartridge pressure. Real useful if you are pushing the outer limits your load.
4 maj 2024 · 9mm Plus P ammo, also known as 9mm +P, is a higher pressure and velocity version of the standard 9mm cartridge. It is designed for use in firearms that are rated for higher pressures, offering increased power and performance.
5 maj 2024 · If you’ve ever wondered what is considered 9mm +P ammo, it refers to 9mm ammunition that is loaded to higher pressures than standard 9mm ammo, resulting in increased muzzle velocity and potential stopping power.
SAAMI’s cut-and-dried specs quantify a +P rating in terms of pressure increase—for the 9mm it equals a 10 percent bump; .38 Special, 9 percent; .45 ACP, a 9.5 percent bump.
The SAAMI Maximum Average Pressure (MAP) is listed in both the Copper Units of Pressure (CUP) and the Pounds per Square Inch (PSI). Some cartridges do not have either a PSI or CUP listed, and they are omitted. Cartridges with +P Pressures, list both the standard and +P Pressure.
