Re: CFE223 and ETips
I haven't tried CFE223 in any larger caliber rifles yet, but I will pass on a warning. CFE223 is very sensitive to temperature changes. If you are pushing the envelope now in the cooler weather, I would be awful careful of using that load when the temperature rises.
I have been experimenting with in with my 222, with 36gr bullets, it spits them out at around 3600fps in 60-70 degree weather, but one day this summer i shot it over the chronograph when the temp was 90+ and they were going over 3900fps, with a couple approaching 4000.
With 50 gr Hornady SPSX's it was vaporizing the bullets in mid air when the temp was that high. (3500-3600 fps) A load that was very safe and accurate 20 degrees cooler.