Never took time to 'time' them, I'm more enjoying and interested in the number of shots, and volume of cum,,distance of cum spurts. In my best years long ago,,,I had about 8 to 10 shots go off, the biggest ones were immediate first three. ,,then a bit of a delay and some dribble cum loads, but if the situation was just perfect, I'd shoot off another good 2 or 3 long ropes before down to last 2 or 3 shots that ended up just on my own dick.
How about distances of long looping ropes of cum? I've seen some guys spurt down a full length of paper towels they line up down a 6 ft coffee table . Or guys who enjoy shooting themselves up in the face or beyond their shoulder. My best effort to my surprise, was a vertical' shot of 6 ft, on a high bed and a low ceiling. From my back, I power shot up, up, hit the ceiling,and she was riding me cowgirl style, and didnt' notice when the ceiling glob of cum got 'unstuck' and dropped back down on her hair and shoulder. But overall time.. I'd guess since I fired off most shots fast to start, that I'm not lasting more than 10 -14 seconds for all my cum to be emptied per session.