H - Thanks! My dream is to pack my BullMaster, but no, I don't yet. What you see in my pics is about the max I've gotten so far. My balls and cock swell into the pockets, but haven't completely filled them up yet. My routine is to stay fairly well shaved, lube my balls and cock with olive oil before each session, wet pump with about 20 oz or so of warm water, use a heating pad under my BM, and pump at about 5" Hg or so, occasionally cycling down to 0", and pump for 2 - 4 hours a session. After about 1 1/2 - 2 hours, I hit a "sweet spot" where pumping feels great, even at higher vac levels. In the first hour or so, my nuts expand. In hours 2 - 3, my sac expands to the max, with the skin being about 1/2" thick, or 1" thick when pinched. All in all, I find the BM to be a very comfortable tube, that tends to stretch your sac over time, hopefully leading to big low hangers.
I see you have a BM too. What are your experiences and thoughts about this tube? Happy pumping! Kel