Here you can see that changing the muzzle velocity of trace 1 to 2701 f/s results in the same energy at 400 yards as the load in trace 2.

Use the x100 slider to make large changes in muzzle velocity or the x1 slider to make fine changes. Whenever you change a control, the program automatically updates and displays the results after a short selectable delay. The delay allows large changes to be made without being interrupted by multiple updates. The default update delays is 0.25 seconds. This can be changed by clicking Options at the top of the Explore display and selecting another delay time from the Update delay menu.

On most machines, updates are perceived as a flicker. Select the shortest time that results in a single flicker when making a single change to a slider control.