This bowhunter uses a technique called roving, where he strolls through the forest, picking random targets of the earth such as individual leaves or ridges or what have you, and he simply fires at them. This mixes up distances and angles and truly trains
An ameture historian shows how they used to make firearrows back in the day. He is pulling 100 lbs (which was low for the time) and the arrows only go a few hundred feet due to their weight.