He aint going to get 950fps with heavy lead, not in a S410E, Bismags will not reach 950 unless gun has been modified and the sound of the gun sounds std FAC

I have shot air rifles up to 100ftlb plus, and that is a 28-30ftlb AA with Exacts

I still think its 100m made to look 200m easy to do if you zoom in and out with cheap camera