I got a question about your guys primer usage with .223. The Lyman book is using Remington 7 1/2 for all loads. The Speer 14 book is using Standard CCI SR 400, and on some powders using CCI SR 450 magnum. I don't have either of those but I do have CCI 41 primers. That's the only two sources I've checked so far. I had bought H335 for loading .223. I feel I could probably use any small rifle primer in a pinch. Or, I also have data for H4895, IMR4064 and IMR3031. I'm kind of surprised those last three would be listed for .223, seeing as I've been using them in 06 and 6.5X55 loads. So I do have other powder options. And if it matters, I'm using Hornady 55 grain FMJ BT with a cannelure.