YUp, there is a number that lines up for a lot of folks (5 x dose). Ive seen many on 250 and have like 1300 total-test. Your buddy at 350 x 5 would come in at the top of what you posted (1750 (close to 1500). Of course it goes up/down. DJ's a hyper responder, and his gear could be over-dosed if UGL...
Anyways, its all good and no one "real number" when it comes to dosing.
could be i shoot 125 mgs on mon and thurs and i took the bloods on mon morning before the monday shot so a tail end reading to boot
i eat like a bird and i sleep 5 hours a night insomina sucks ass
gonna try the vertical diet, red meat and rice, and get at least 7 hours of sleep if possible and train every other day instead of 6 to 7 days a week while increasing loads goal is 255 paused bench for 6 reps right now it's 205 for 7 if i hit that pecs, delt and arms should be bigger and i might finally have 17 inch cold arms but will probably only weigh a buck 70 or so

not sure how many aids patients have 16 1/4 cold arms at 165 pounds bw