SAAMI Pressure for 9mm

checkfeo · 01-08-2011, 02:35 PM

Call it what you like, CUP, PSI, PIEZO SAAMI CIP. It's all a way (although different way) to measure the chamber pressure of a firearm, and yes, there is a max. That was not my question.

We reload so we can control the speed, accuracy, and pressure (among other thing) in the bullets we shoot. We try to find the best load for that particular gun. If you find a good factory load, you may try to duplicate it. That was my question. Is white box a near max load, or near min load, or something in between?

I beg to differ, but the amount of pressure generated by a curtain load has everything to do with the cycle rate and function of any recoil or gas operated firearm. The higher the pressure, the faster the bullet goes and the harder and faster it cycles.

I don't know of anyway to measure, "impulse," I don't even know what that is referring to, or how to change it, but I do know and can change the amount of recoil by changing the amount of pressure.

Different ammo works better or worse because of different pressures, shapes, weights or lengths. Giving the correct impulse, recoil, if thats what you mean, but to say it works on impulse or by impulse is just not correct. It's Pressure.

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01-08-2011, 02:35 PM	#7
checkfeo User Join Date: Nov 2010 Location: Georgia Posts: 41 Thanks: 1 Thanked 20 Times in 8 Posts	Call it what you like, CUP, PSI, PIEZO SAAMI CIP. It's all a way (although different way) to measure the chamber pressure of a firearm, and yes, there is a max. That was not my question. We reload so we can control the speed, accuracy, and pressure (among other thing) in the bullets we shoot. We try to find the best load for that particular gun. If you find a good factory load, you may try to duplicate it. That was my question. Is white box a near max load, or near min load, or something in between? I beg to differ, but the amount of pressure generated by a curtain load has everything to do with the cycle rate and function of any recoil or gas operated firearm. The higher the pressure, the faster the bullet goes and the harder and faster it cycles. I don't know of anyway to measure, "impulse," I don't even know what that is referring to, or how to change it, but I do know and can change the amount of recoil by changing the amount of pressure. Different ammo works better or worse because of different pressures, shapes, weights or lengths. Giving the correct impulse, recoil, if thats what you mean, but to say it works on impulse or by impulse is just not correct. It's Pressure.