blow-forward pellet gun

[jackssmirkingrevenge]

it might even increase power with a lower-flow trigger mechanism

I doubt it, the faster the bolt moves forward the quicker it "opens the valve" so to speak, and therefore gives more power - you can see this by comparing the low/high flow videos. A stronger spring will slow down the bolt, though it will allow greater pressure to build up behind it, so the effect on performance is debatable.