aluminum ammo H&K

laktrash · October 22, 2009, 06:44 PM

I just bought a H&K compact 45 . The manual says not to use aluminum cased ammo. Whats the reasoning ? Not disputing but I sometimes use blazer aluminum at the range with my other guns should I not use it at all ?

hoytinak · October 22, 2009, 06:56 PM

I've shot thousands of Blazer aluminum cased ammo through my USP compact and have never had any problems.

PSP · October 22, 2009, 07:40 PM

The concern is that the Aluminum case has a much higher propensity to spall inside the chamber. Continued spalling can, over time, cause the chamber to shrink, thus increasing the pressures and possibly even getting to the point of causing misfeeds. My guess is that it would take a lot of shooting aluminum to do this. Metal spalling is hard to remove.

IdahoG36 · October 22, 2009, 07:46 PM

Quote:

The concern is that the Aluminum case has a much higher propensity to spall inside the chamber. Continued spalling can, over time, cause the chamber to shrink, thus increasing the pressures and possibly even getting to the point of causing misfeeds. My guess is that it would take a lot of shooting aluminum to do this. Metal spalling is hard to remove.

+1. Aluminum has a tendency to spall against steel, and as PSP stated, is very difficult to remove.

October 22, 2009, 06:44 PM	#1
laktrash Senior Member Join Date: March 29, 2008 Location: east tenn Posts: 200	aluminum ammo H&K I just bought a H&K compact 45 . The manual says not to use aluminum cased ammo. Whats the reasoning ? Not disputing but I sometimes use blazer aluminum at the range with my other guns should I not use it at all ?

October 22, 2009, 06:56 PM	#2
hoytinak Senior Member Join Date: July 5, 2006 Location: Texas Posts: 5,721	I've shot thousands of Blazer aluminum cased ammo through my USP compact and have never had any problems.

October 22, 2009, 07:40 PM	#3
PSP Senior Member Join Date: June 2, 2006 Location: Bowling Green Virginia Posts: 4,487	The concern is that the Aluminum case has a much higher propensity to spall inside the chamber. Continued spalling can, over time, cause the chamber to shrink, thus increasing the pressures and possibly even getting to the point of causing misfeeds. My guess is that it would take a lot of shooting aluminum to do this. Metal spalling is hard to remove.