The Firing Line Forums - View Single Post - Could Someone Explain The .38 Special +P Loads Please?

243winxb · July 31, 2011, 11:42 AM

SAAMI lists ammo by PSI & velocity. Most handloaders have no pressure testing equipment. If we follow & use the exact components listed in the loading manual, the velocity/PSI may be close. Change a component, pressure is changed. So the old method of start low on the powder charge and work up still holds true,while watching for pressure signs. A chronograph can be useful. SAAMI pressure and chamber drawings can be found here> http://www.saami.org/specifications_...ex.cfm?page=CC

July 31, 2011, 11:42 AM	#4
243winxb Senior Member Join Date: July 26, 2011 Location: USA Posts: 1,730	+P is Determined by PSI SAAMI lists ammo by PSI & velocity. Most handloaders have no pressure testing equipment. If we follow & use the exact components listed in the loading manual, the velocity/PSI may be close. Change a component, pressure is changed. So the old method of start low on the powder charge and work up still holds true,while watching for pressure signs. A chronograph can be useful. SAAMI pressure and chamber drawings can be found here> http://www.saami.org/specifications_...ex.cfm?page=CC