Biofeedback may be a better explanation. However, when I get into the 'zone' or whatever it is I also experience auditory exclusion and tunnel vision. There is usually a lot of noise from gunfire, the acrid smell, shell casings pinging around and into you. The Little Creek range where the displayed target was scored is an indoor range. It was really loud in there as the noise was reverberating around from about 15 or so shooters at once and I did not hear any of it.As to what one can do to induce tachypsychia... Actually Rich above isn't quite correct in connecting tachypsychia to his good shooting performance. He instead is achieving another visual "distortion" (the target appearing bigger) because this directly relates to his performance.
The operative word here is biofeedback.
Also, when at the range after I hear the first shot I have no startle reaction from gunfire. Conditioning I suppose.
Rich