Yeah, breaking the record is pretty boring to watch... NOT!
To reach 200 Joules you need ~128 fps with that ammo. I guess you need a warm day to get there.
But it seems pretty much maxed out, isn´t it?
Maybe some more radical tapering jeopardising bandlongevity for a record shot?
I remember Jörg´s words from the W-Tutorial... we are going for power, not for compromises