I appreciate the situation, you're 19 and he's 57.
The remedy to this is. You need to find a new place to live. Living free on someone else's dime imposes expectations on one or both sides that you should not have to deal with.
I wouldn't go shooting with him again, but if you do, I would break it down into very basic steps that you 100% control as suggested above. You load and handle all guns, guns never leave the firing line, you select and position the gun on the table pointing down range and your friend is permitted to pick up the gun keeping it pointed down range, fire and place it down exactly as he found it and that's it.
Advise the consequences of deviation from this plan before you start " so, before we begin today, I will be the one doing all the loading and unloading, you will keep the gun pointed down range at all times, you will advise me before shooting, you will keep your finger off the trigger until you are ready to shoot - if we mess up on any of these, the day at the range is over and I will pack everything up and we go home. Make sense? Okay, good."
This makes your expectations explicitly known ahead of time and also the consequences. And if he screws up, you have to follow thorough (like dealing with a child), and stop everything immediately and pack up and leave. This is how to teach the slower people an important lesson.
My recommendation is to move out, the latter part is really a less desired alternative.
The remedy to this is. You need to find a new place to live. Living free on someone else's dime imposes expectations on one or both sides that you should not have to deal with.
I wouldn't go shooting with him again, but if you do, I would break it down into very basic steps that you 100% control as suggested above. You load and handle all guns, guns never leave the firing line, you select and position the gun on the table pointing down range and your friend is permitted to pick up the gun keeping it pointed down range, fire and place it down exactly as he found it and that's it.
Advise the consequences of deviation from this plan before you start " so, before we begin today, I will be the one doing all the loading and unloading, you will keep the gun pointed down range at all times, you will advise me before shooting, you will keep your finger off the trigger until you are ready to shoot - if we mess up on any of these, the day at the range is over and I will pack everything up and we go home. Make sense? Okay, good."
This makes your expectations explicitly known ahead of time and also the consequences. And if he screws up, you have to follow thorough (like dealing with a child), and stop everything immediately and pack up and leave. This is how to teach the slower people an important lesson.
My recommendation is to move out, the latter part is really a less desired alternative.