The speed of sound changes with altitude I am told

Usint a .25 with heavy pellets at 1130fps you have a LOT more chance of achieving reasonable accuracy at 200yds and enough energy to smash a bottle than the one in the film

I think hes a max of 120yds from the target, still pretty good but a LOT different to 200yds as the pellet will be dropping like a mortar after 100yds, as it does on a .22 rimfire

I have shot tin cans at 300yds using .22 rimfire and subsonics, but it was on a dry field so bullet splash was easy to see (and richocets!) the holdover was quite a few feet but I cant remember how many as it was years ago

All good fun though