Dave Saunders Timeline and Summary

Dave is bullied at work, which makes him want to buy a gun.
He visits Joe's store, where Joe offers to sell him a cheap old gun for two dollars.
Dave rushes home and convinces his mom to give him money. She wants him to bring the gun home immediately, though, so she can give it to his dad.
Dave buys the gun, but manages to avoid giving it to his mom.
The next morning, Dave heads into work early. Hawkins sends him out to plow the outskirts of the fields with Jenny the mule.
Once he's out of earshot, Dave fires a few bullets. He accidentally hits and kills Jenny.
When Hawkins finds out, he makes Dave promise to pay him fifty bucks to make up for Jenny's death. This is the equivalent of two years of Dave's wages. Ugh.
Later that night, Dave gets the gun and empties the clip into the woods.
Impulsively, he hops onto a moving train and leaves home for good.