High power 177 Part 2 Is there place for High Power 177 air rifles?

Part 2 of the High Power 177 takes us onto the JSB beast, JSB monster redesigned and H&N slugs, they are all 13gr + in weight and needs plenty of power to move them forward.
Latest tests:
High Power 177 Part I • High Power 177 Part I ...
500mm versus 600mm barrel • Does barrel length mak...
Copper versus lead 60m test • Lead versus Copper 60m...
Bent skirts: • Bent Skirts on pellets...
JSB Polymag test • Polymag testing at dif...
Copper versus lead versus lead free • Copper versus lead ver...
H&N 25gr slugs optimal speed • H&N 25gr Optimal Speed...
H&N 27gr slugs optimal Speed • H&N 27gr Optimal speed...
H&N 30gr slugs optimal speed • H&N 30gr slugs optimal...
Hunting pellets .22 at 60m test • Hunting pellets 60m te...
High Power pellet test .22 60m • High power pellet test...
Light weight slug .22 • Light weight slug