I finally was using my Hornady gauges to check the lands on my .223, and While I was fine with Nosler Varmageddons, I measured the chamber for hornady 55gr sp. bullets. My hornady book gave me a OAL of 2.20", And I used that as my max until today. The guage measures the lands at 2.815, and my lee bullet seater die bottoms at 2.815 on the ogive, giving me a OAL of 2.53" !!!

So I was jamming it by .33" !!!!!!!! What am I missing? Do I have a Short chamber? All other measurements fine.. Apparently it was a good thing I don't use a lot of neck tension....