Birdlocked discussion

After measuring up carefully, I’ve landed right between a 40 and 45 ring diameter. A quick test with cable ties showed that a 130mm circumference cuts off circulation too much, while 145mm is loose enough to slip out; the sweet spot seems to be around 135-140mm. I lean towards the 45 size because it can always be tightened up further if needed. Does it have enough flexibility to prevent pinching? Also, my flaccid penis and balls fit comfortably through a solid brass ring with an 115mm inner diameter without trouble, but getting hard inside that small ring was quite uncomfortable. It feels like the wrong size (equivalent to a 36 birdlock), yet it hints at a worrying pattern: I might be able to get in and out of a ring that still significantly restricts blood flow. Hopefully, a ball-trapping device will work for me—the extra width could stretch the skin enough to make escape impossible—but only time will tell. If it is escapable, I’ll likely fix it with a frenum piercing. Any advice on diameter? Based on what others have said, I’m placing my order tonight or tomorrow; I can’t wait any longer. It’s high time I got locked up.