I'm getting some to try. I've bought a well crafted 243AI which i'll use them on in addition. I am going to attempt them in my 30 Nosler but I'm igniting 80 grains of H1000. I am using Gold match bench mag primers in it now but a special primer https://johnnyqkeys.blog4youth.com/32126573/alliant-unique-can-be-fun-for-anyone