When I made the headshot I just finished assembling my M4 and had a cheesy Bushnell Banner Scopechief on it. I got it on trade and was the only spare scope I had. My handloads using once fired Federal brass I got from the range, Nosler 2nds 55gr BT under some TAC. I swapped that scope off and had a Zeiss Conquest 1.8-5.5x32mm on there afterwards. I just sold that scope last week and am considering the PA 1-6X for the M4. I have a Nikon 4-12X Mildot on the HBAR right now. My load is 50gr VMAX under TAC or H4895. I might try H322 or H355. I'll be shooting the 53gr VMAX latter this season as the rats get more wary.