Topic on User talk:Perci
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Without the timer, the video can be used as a proof by seeking frame by frame, but reducing playback speed to 0.25x makes the right arrow key seek 75 frames. Here you have to seek 174 + 14 = 188 frames to between the first needle appearing and the second needle appearing at the successful reload, and 2 frames less for the interrupted reload. Each frame of the 60 fps video corresponds to a WAIT 1.