No doubt it is one of my favorites, but during the shortage, I did quite a bit of experimenting with whatever I could get my hands on. And every time a new extreme condition powder comes out I have to try it just to see how it compares. To me, temp sensitivity is of utmost importance, I hunt CO, ID, MS, and sometimes other places yearly, my hunts can vary from 500' to 13000' elev. and -15F to 80F in temp. I'll have to look at my notes but I think during my test 80F/ 32F- H1000 and H4831 vary @25 fps, IMR Enduron @80fps, RL 23 @50fps. I'll check that when I get home but it's close. I can tell you the worst I've tested was Norma MRP it varied @150fps although it is not an extreme condition powder, it was touted as being close to Weatherby factory load, it is not. I shot WBY ammo for years and never had it vary that much.