Guys, I am using the Shooter ballistic app for my Android device and have a couple questions.
I am trying to determine which drag model is appropriate and the exact BC for the Sierra MK I am loading for my OBR.
Going to chrono it next weekend, but for now I am using the estimated velocity of 2500 FPS from my 16" barrel, because that is the estimate I have heard from other guys shooting this loading in their 16" OBR.(175SMK, 43.5 gr Varget, Lapua brass, Fed 210m, COAL 2.80)
So, should I use the G7 drag model, and what BC would you enter for the SMK 175? Thanks.
I am trying to determine which drag model is appropriate and the exact BC for the Sierra MK I am loading for my OBR.
Going to chrono it next weekend, but for now I am using the estimated velocity of 2500 FPS from my 16" barrel, because that is the estimate I have heard from other guys shooting this loading in their 16" OBR.(175SMK, 43.5 gr Varget, Lapua brass, Fed 210m, COAL 2.80)
So, should I use the G7 drag model, and what BC would you enter for the SMK 175? Thanks.