When I got my initial 10MM DT loads I went to the range thinking that if I could get within 75FPS of stated speed I would be lucky. The screens said, "charley it is so". I was right on or over the stated speed (10MM) with the G20 that they advertised. That's been a while ago. DT and Buffalo Bore are my "preferred" loads for 10MM, .357SIG, & .40SW, I have total confidence in both.Although I have bought some 5.56 DT I have'nt shot it yet, my screens little confuzer is broke.