That’s about the same conclusion I have came to. I was more intrested in the carbon barrel from a cooling stand point. Interesting enough it appears that the carbon may help block mirage but may hinder the barrel from actually cooling as quickly.I'm about 1500 rounds on stock barrel. And if I do go with proof I'm going to go with steel barrel. My rpr is already a tank I'm not trying or needing to lighten it up. Carbon fiber looks sweet but I'm honestly just going for better accuracy than the stock barrel.