The past 2 years or so it's been completely random. Sometimes i'll go 3-4 days without busting and then i'll crank one off 2-3 times a day for a couple days. Ideally it's good to have a nice wank before bed, but on 300mg of Test a week i find myself cracking one off in the mornings several days a week. On average i'd say 5 nuts a week.
On the weekends i see my girlfriend we smash 2-3 times a day. She lives 6 hours away so we only see each other every other weekend. When we are going to be together i won't wank for a couple days so i have plenty of energy, plus i noticed i bust huge loads after not whacking for 3-4 days. Always give her the old surprise facial on the first nut. Even though she doesn't like it.

If i raise the test up to 600-750mg per week i have to whack off at least twice a day, which can get annoying.
I regards to multiple sessions, a few years ago i was dating this Mexican slut and we'd have Sunday Fundays where we'd drink almost all day and bang until we got to sore to do it anyone. Easy 5-6 nuts busted in 10-12 hours. Once your dick gets raw it's not fun anymore. She was a real whore, sometimes we'd smash for over 2 hours straight. Luckily she was always soaking wet, so it was easy to bang for long time frames.