Strange the amount of psilocon does not relate to the amount of psilocybin?
Cubensis must be strong though.
I'm curious now, what does one get from a stronger dosage than the 2g I took, or will it just last longer?
In my experience the length of the trip is not dose-dependent. However, there is a difference in this regard in how you take them, and whether you have food in your stomach - If you grind them to powder, mix them into orange juice [the theory here being that the acid starts converting the psilocybin into psilocin even before it gets inside of you], and chug this down on an empty stomach, the come up is sometimes astonishingly fast, and the experience generally more intense and shorter.
Conversely, eating them whole / mixed with food, with an already full stomach, the come up is going to be longer, and the experience itself tends to be of a slightly extended duration. For many people though, this causes somewhat unpleasant nausea, and my preference would be to use them after an actual fast of at least an entire day - Not just to empty yourself, but also to make sure you don't have any coffee, etc inside of you that could interact (albeit mildly) with the shrooms.
If you want to extend the experience, best bet is to re-dose about two hours in, and this is also probably a good thing to do (as opposed to having a too-large dose in the beginning), especially if a person is not experienced. These things can kick your ass, and I've read so many stories of people who have a fun old time, and then because we are stupid animals make decisions like "well, if 2 grams was fun, then 6 grams is surely 3 times as fun, right?". Wrong, probably...
As for what people get from a stronger dose, I think it's generally accepted there are five 'levels' (this idea comes from Timothy Leary, although these are not his descriptors):
Link.
Trip level 1: A little numb and very social
You may feel extreme relaxation, a “stoning” effect. Colours and sounds may be different; wider, brighter and clearer. You are socially more active, and maybe a bit philosophical.
Trip level 2: Creativity and mild visuals
Everything looks bright and objects may look like they’re slightly moving and breathing. When you focus on objects, it may look like they are made of smooth plastic. When you close your eyes, you may see some patterns. Your short term memory changes, which causes you to change thoughts rapidly. Your natural way of thought is bypassed, which makes you creative and come up with new ideas.
Trip level 3: Stronger visuals, mild hallucinations
Strong visuals, kaleidoscopic effects, and waving, warping objects and faces around you. Mild hallucinations like flowing water and trees. Closed eye hallucinations are more obvious and attractive (probably 3D). Some disorientation as what you can feel, see or hear. Lost control over what time it is and how long you’ve been tripping.
Trip level 4: Intense hallucinations
Intense hallucinations, things around you are morphing. You may feel that objects or hallucinations are talking to you. You may feel multiple emotions at once, contradictions. Time and reality seem meaningless. Mild synesthesia. Possibly out-of-body experiences.
Trip level 5: Total loss of reality
Visually, everything is different. Reality and ego are dissolved. You are not sure what you see and what you hear, because everything seems to function as one. Time and reality are gone. You feel like merging with the universe and/or objects around you. There is no way of perceiving things, there is no right or wrong, there is no reality. You feel like you are blended with space and eternity. Some call this Satori, awakening or enlightenment
I'd say I've been at about a 3.5. I'm not sure I'd be comfortable with anything above that, at this point in my life.
*edit*
Personally, I thoroughly enjoy the point at which the closed-eye visuals become 3 dimensional and colourful. That **** is like watching art being created real time in your head. It is beautiful.