Velocity and powder conundrum

[NDSwede]

Here’s a very interesting video on the subject of velocity required for expansion. His bullet should be hitting at about 1780 fps. As he shows there is no expansion at that velocity.
My ballistic calculator shows your bullet should also hit at about 1780.
Personally I’d call your load a 300 yard gun. It should hit at 1925 fps and 1010 ft pounds of energy.

https://youtu.be/XiEx_JQCfbg