I doubt that anyone can top 6 shots in 1 hour. Was there a rep from Guiness there to verify it?
I managed 6 or 7 in a row (read no refractory period) with an ex-gf when I was in my late 30s. She knew I could cum multiple times and wanted to see just how many times I could do it in a row. No ED drugs either. I've always been able to cum multiple times without losing my erection. As a result, I used to get some really weird looks from partners the first time I would cum, then just keep going until I came again.
Even today when I'm having sex with my wife, I'll cum twice in a row. When I go to see an MPA I'll cum 2 times in a row from the HJ, then jerk myself off immediately after for a total of 3 in a row. "Oh, you so strong." lol... I must be a freak of nature because I've always been able to do this.
As for max partners in a day, that total is 3. It was a time when I was younger and had a few fuck buddies. The first one came over on a Saturday morning. She was a young, white 18 year-old and we played around and fucked a couple times. She left at noon. The second one, another 18-year-old, but a black girl, called me at 1:00 PM as she was on the bus near my place. I quickly tidied up and made sure there was no used condoms laying around. We had sex and she left at 4:00 PM. A third friend, a white woman about 30 years old, called me at 6:00 PM. We went out for dinner and drinks ended back at my place at around 10:00. She was really horny and we ended up having sex.
That was a day never to be repeated, but one for my record books.