Using the DTR app and reticle, David's effective hold point is 977 yards for a 2448 yard target using the 37XC. Wind is called in miles per hour. Watch the red flasher light up when the 30in X 44in white steel target is hit at 2448 yards using a TUBBGUN™ in 37XC shooting 400grain Warner flatline bullets with nose ring. TUBBDUST is mixed into powder. Load is119.5 grains of IMR 8133. Velocity is 2911 FPS. David is trying the Tactacam 5.0 with FTS for the 1st time for filming.