Big fan of bk2cb you are sprout! Ever tried the non bk 2cb?
Yes I am!
However, it is nothing like its non-ketonated parent. Much closer to the substituted amphetamine family than the 2 Carbon, IME at least.
The arbitrary figure of 10x less potent than 2C-B is inaccurate, also. 40mg 2C-B would be a very enjoyable trip, 400mg of BK-2CB would be farrrr more intense mentally, but even more so physically. The VC is extreme, the aches, tension, bruxism, mydriasis, trisma are also brutal.
It is an absolute bitch to 'get it to work', though, so many people try a few times, possibly mixing with water or whatever, then give up on it. My best results have come from placing the powder into a Rizla bomb, then wrapping the bomb in another paper, before adding to a large VG capsule, which has 50-100mg of Ginger Root Extract in the bottom. So; triple layered and the GRE is hygroscopic so any liquid is absorbed before even getting chance to soak into the paper.
Obviously, you can play around with stomach pH and acid secretion with OTC products - I used to use a PPI for a few days prior, then stop on the day: rebound H+ secretion etc.,
Also, the dose-response curve is vicious.
2C-B felt rather forgiving in that regard, but BK-2CB takes the cake for 'exponential curve'.
Again; nothing like 2C-B, which always had that empathogenic, 'liquid electric' body high to accompany the psychedelia.