I find that if I don't cum at least once a day, I just have thicker semen, not that I can shoot farther. In fact, when it's more liquid than chunky, it tends to go a hell of a lot farther. Also, age has a lot to do with it. When I was in my teens and 20's, I could do a Peter North type cum shot if well stimulated. At 45, I can still shoot a real good amount, but nothing like when I was in my early years.
(see my photos for a sample, that was the 2nd cum shot of the day)
(I need to find the vid where I shot over my head, that was porn star quality)