CCI 500 vs CCI 550 primers

Civil War Life · February 19, 2011, 04:42 PM

I went to my local outdoor supply store recently to get a thousand CCI 500 primers. When I got home I found I had 1000 CCI 550 primers instead. My load data for my 38 spl and 9mm call for CCI500 small pistol primers. Does it really matter what primer I use. I am using Bullseye for my 38 spl and Accurate #5 in my 9mm. I know these are small pistol, but what difference would it make to use them?

Thanks

Shoney · February 19, 2011, 09:14 PM

Yes! You can substitute mag into standard recipes as long as you test by reducing the start load by 5% and working up slowly watching for pressure signs. Pay close attention to OAL.

February 19, 2011, 04:42 PM	#1
Civil War Life Senior Member Join Date: January 15, 2011 Location: Virginia Posts: 166	CCI 500 vs CCI 550 primers I went to my local outdoor supply store recently to get a thousand CCI 500 primers. When I got home I found I had 1000 CCI 550 primers instead. My load data for my 38 spl and 9mm call for CCI500 small pistol primers. Does it really matter what primer I use. I am using Bullseye for my 38 spl and Accurate #5 in my 9mm. I know these are small pistol, but what difference would it make to use them? Thanks

February 19, 2011, 09:14 PM	#2
Shoney Senior Member Join Date: February 21, 2002 Location: Transplanted from Montana Posts: 2,311	Yes! You can substitute mag into standard recipes as long as you test by reducing the start load by 5% and working up slowly watching for pressure signs. Pay close attention to OAL. __________________ I pledge allegiance to the Flag - - -, and to the Republic for which it stands….Our Forefathers were brilliant for giving us a Republic, not a democracy! Do you know the difference??? and WHY?http://www.wallbuilders.com/LIBissue...les.asp?id=111