04-26-2020, 03:10 PM
1Shot Wrote:Only slam fire I have ever had was with the M1 Garand many years ago when I first got one and started hand loading for. It doubled once and then with the next clip it tripled. Experienced M1 person at range stopped me and before I could tell him what primer I was using he said I bet you are using Federal primers. Sure enough I was using Federal. 210 Match. He as well as others in the high power game have told me that the only primer that they have seen slam fire that was seated correctly has been Federal. Federal now makes a AR specific small rifle primer. Only slam fire I have ever witnessed with an AR was when a fellow was trying to use Remington 6 1/2. I have used many Remington 7 1/2 with no problems. As I said I have never had any problems with any primer except Federal. On Jonny's Loading Bench on YouTube he did a primer comparison video using just one load and there was a difference in what primer was used but not that much with some. Now that was with ONE load. If you change the load things might be difference. Go to YouTube and check this out. I used CCI 450 with all my Grendel loads because that is what I started working with and what I found my loads with.
Great Info! Thanks