BT65 Carnivore 357 tune and ammo test / first video so be kind

OK so I bought a used Hatsan BT65 357 Carnivore from JD in the classified section for a buddy of mine.
It was only putting out about 70 pounds of energy and he wanted a bit more for a flatter trajectory and a bit more knock down power for bigger varmits.
After reading what some others have done on other bt65's i decided to dive in on this one and see what I could make happen. 

This is my first video so be kind but please critique it and let me know what I should do different. I had a lot of fun doing it and hope it's informative to ya'll.