I swapped into a new DD rifle and shot it yesterday, did not do very well so will not post the results, I am however convinced that 4X is not a high enough power to shoot this challenge, especially with a circle dot reticle. I shoot all the way thru with just enough time in between to recover and get my scope back on target, so I am not burning up the barrel nor am I letting it cool. I shot another 10 out of my Noveske barreled gun yesterday as well shooting a 62 grain TTSX load I hunt with, it shoots 1MOA with everything or thats about the best I can do.