Well i picked up a power adjuster for my 2300 from Art, it looks pretty spiffy.
and between a HDD and a low power setting you can get an absolutely absurd number of shots per cart for target work.
I have a feeling playing with different springs and settings will keep me ammused for a while.
haha i spent a while last night tweaking it up and down vs a plastic milk jug, from bouncing off, to penetrating one side, to going straight through was just a couple turns of the knob.

Yeh im not sure whats gona become of the 4050 exactly.
One thing thats kinda up in the air is barrel lenght, i got some numbers from Steve in NC that suggest rapidly diminishing returns with that bore side on a 22xx valve.
I have extra blowgun tubes so im gona try cutting one down short.
I would love some easy way to make it a breech loader, i have one idea, but im not sure it's practicle.
(i meen besides a custom breech, i want this concept to stay i the realm of things most people can do in their garage, just on principle.)
I'll snap a pic for you sometime soon.