The Sierra, Rifle And Handgun Data, shows the most accurate load that is found over the range of loads. It shows the ft/s and ft-lb as you move across the columns. How they got to that most accurate load was to work-up to that and note change for each of those loads. I'm calling you out on not working up loads while keeping all other variables the same, then picking the most accurate for your rifle. It may be crimping that's the problem, but you won't know unless you work-up loads and find the one among them that works best for your rifle.
