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 https://youtu.be/K41NDVbUMkU
500mm versus 600mm barrel https://youtu.be/pV1AOeQ35xg
Copper versus lead 60m test https://youtu.be/F93XGWLbH08
Bent skirts: https://youtu.be/yG4Tl7NWlZw
JSB Polymag test https://youtu.be/gIZf8AQLK7A
Copper versus lead versus lead free https://youtu.be/oeAhVTKzub4
H&N 25gr slugs optimal speed https://youtu.be/Aje6O-Vqbtk
H&N 27gr slugs optimal Speed https://youtu.be/VJqB0exFQq0
H&N 30gr slugs optimal speed https://youtu.be/6yUP7-G2Ons
Hunting pellets .22 at 60m test https://youtu.be/hnHHUNhuJh4
High Power pellet test .22 60m https://youtu.be/GUIwmFUpk7w
Light weight slug .22 https://youtu.be/7NXbMOCwp1g