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DaHaMac · February 18, 2002, 06:09 PM

Sorry guys, by saying .45Colt +P I meant to imply .45Colt Ruger, Freedom Arms, or T/C loads. The 27th Hodgdon book sets a limit of 30,000cup for these ".45Colt +P" loads. Of course we all know what Linebaugh and Casull can do with .45colt loads that is why I own a .454

Here is one of my current interests, the 10mm. Now, my dilemma: What is the "safe" pressure levels for the 10mm. I have seen a number of conflicting reports. I'll attempt to document those reports here.

1. Hodgdon 27th max pressure in PSI: 36,900
2. Speer #13 max pressure in PSI: 37,500
3. http://marina.fortunecity.com/harbour/347/10mm01.html case max pressure 53,000cup [I have to wonder about the source of this information, and how CUP compares to PSI in this case]
4. http://www.calweb.com/~haas/ammoguide/runammo.html "Loads ranging from a mean working pressure of 37,000 psi and a maximum pressure of 44,000 psi"

This is the type of convulted information that has created my dilemma and my curiosity regarding these "Industry Standards" or "SAAMI" specifications. If no one agrees on the standards in the industry, well then the reloader who is curious can find themselves in deep hooey and a face full of steel, brass, and lead.

I also am keenly aware that alot of these variables are dependant on EACH individual gun, and because my SRH .454 is proof tested to 92,000psi and can operate with a pressure of 62,000psi (http://www.modernapplicationsnews.co...1stainless.htm) does not mean that I will ever dare to load anywhere near those levels. This redneck might be dumb, but I ain't st00pid; least not all the time NEways.

February 18, 2002, 06:09 PM	#7
DaHaMac Senior Member Join Date: February 9, 2000 Location: West Central Georgia Posts: 247	Sorry guys, by saying .45Colt +P I meant to imply .45Colt Ruger, Freedom Arms, or T/C loads. The 27th Hodgdon book sets a limit of 30,000cup for these ".45Colt +P" loads. Of course we all know what Linebaugh and Casull can do with .45colt loads that is why I own a .454 Here is one of my current interests, the 10mm. Now, my dilemma: What is the "safe" pressure levels for the 10mm. I have seen a number of conflicting reports. I'll attempt to document those reports here. 1. Hodgdon 27th max pressure in PSI: 36,900 2. Speer #13 max pressure in PSI: 37,500 3. http://marina.fortunecity.com/harbour/347/10mm01.html case max pressure 53,000cup [I have to wonder about the source of this information, and how CUP compares to PSI in this case] 4. http://www.calweb.com/~haas/ammoguide/runammo.html "Loads ranging from a mean working pressure of 37,000 psi and a maximum pressure of 44,000 psi" This is the type of convulted information that has created my dilemma and my curiosity regarding these "Industry Standards" or "SAAMI" specifications. If no one agrees on the standards in the industry, well then the reloader who is curious can find themselves in deep hooey and a face full of steel, brass, and lead. I also am keenly aware that alot of these variables are dependant on EACH individual gun, and because my SRH .454 is proof tested to 92,000psi and can operate with a pressure of 62,000psi (http://www.modernapplicationsnews.co...1stainless.htm) does not mean that I will ever dare to load anywhere near those levels. This redneck might be dumb, but I ain't st00pid; least not all the time NEways.