I used to use a lot of H-335 in .223. I noticed the temperature sensitivity on a prairie dog shoot in AZ. I switched to H-322 which seemed to work just as well but was much more stable. I have now switched to TAC, but X-Terminator was also very good with 40 gr bullets in the .223. Tac is more versatile, so I've made the switch. TAC measures just as well as H-335 without the downsides. I also switched to Big Game in my .22-250 loads for the metering accuracy and it shoots superbly.
