The Firing Line Forums - View Single Post - Does a primer make that much difference??

rebs · July 15, 2012, 10:11 PM

What I found is that I had a great under 1" group when using CCI # 400 primers, the local gun shop was out of the CCI primers and I bought 200 Federal's to hold me over. With nothing changed except the primer my groups opened up to 3" with the federal's. I went back to the CCI 400's when they got them in and my groups went right back to under 1"

July 15, 2012, 10:11 PM	#17
rebs Senior Member Join Date: January 10, 2012 Posts: 1,593	What I found is that I had a great under 1" group when using CCI # 400 primers, the local gun shop was out of the CCI primers and I bought 200 Federal's to hold me over. With nothing changed except the primer my groups opened up to 3" with the federal's. I went back to the CCI 400's when they got them in and my groups went right back to under 1"