SDW,
Like has been said, slam-fires in this platform are rare as hen's teeth. I've never seen or heard of one over the years, but the risk exists.
I prefer 450's but have used other primers and never had an issue.
Here's a chart of the different dimensions and thicknesses of small rifle primers https://www.accurateshooter.com/technica...-analysis/. We can't assume the same hardness of cups across brands however, so the chart is only part of the story. In the CCI brand, CCI41 are Milspec for 5.56 ammo - Apparently they are the same specs as their 450 magnums.
Yes, I've carefully deprimed and reused unfired primers, but usually throw them away. Obviously the anvil still needs to be in the cup.
Like has been said, slam-fires in this platform are rare as hen's teeth. I've never seen or heard of one over the years, but the risk exists.
I prefer 450's but have used other primers and never had an issue.
Here's a chart of the different dimensions and thicknesses of small rifle primers https://www.accurateshooter.com/technica...-analysis/. We can't assume the same hardness of cups across brands however, so the chart is only part of the story. In the CCI brand, CCI41 are Milspec for 5.56 ammo - Apparently they are the same specs as their 450 magnums.
Yes, I've carefully deprimed and reused unfired primers, but usually throw them away. Obviously the anvil still needs to be in the cup.