I loaded some TAC and CFE223 for 204, the CFE223 shot better. That was in a CZ and I have since went back to a rebarreled savage in 204. I tried some 10x with 40 grain vmax and 39 grain Sierra, over and above accuracy wise to anything else I have tried. Spoke to a buddy dry of mine and he ended up with basically the same load and used it last year, he saw no temp problems.