I have used WIn 748 a lot in my .223 to date and always used mag primers with it. However I am trying some different powders, H-322, RL10x, AA 2015 and IMR-4198. I have/had two bricks of CCI#450 Mag Small Rifle primers and not much else.
I'm not sure this will make a difference one way or the other with the easier to light powders, any pointers, guys?
I'll be ladder loading from start to Max and hopefully the Chrony will work out to capture the velocities.
I'm going to use 50 gr Amax bullets for these. I collet sized and reprimed 100 this morning before it got too hot in the garage. I'll do another 50 rnd lot in the morning.