lyotehunter,
That is what I thought until I looked at my Hornady 5th Ed book and it shows that the Remington 7 1/2 and CCI 450 in the "Small Rifle Magnum" column but the Remington 7 1/2 had an * next to it stating "these primers are designed and manufactured for bench rest/match shooters and are useful in similar applications as the standard primer.
This is why I asked thinking the Remington 7 1/2 is also considered a magnum primer and probably why many loads in the 223 Remington One Book One Caliber Reloading manual list Remington 7 1/2 primers for almost all of their loads. I had not considered the 7 1/2 a magnum primer until I looked it up.
I hate to have to shoot standard primers when I know the mag primers will do better. Which is why I am considering the CCI 450 but since the 7 1/2 has worked for me I guess I will just stay with is until I find an anomaly.
