Most shooting-related accidents don't happen in the field but around vehicles when people are handling loaded weapons.
I follow this topic via google alerts. Most shooting-related accidents involving injuries or deaths
do happen in the field and not at vehicles. Texas seems to follow what goes on elsewhere pretty well. Take 2017. There were 21 firearms-related incidents. 2 were as you described around vehicles, 1 was after the hunt goofing around the campfire, and the rest happened in the field.
https://tpwd.texas.gov/education/hu...dent-report-official-revised-3-25-18.pdf2016: 19 incidents, the data are a bit vague, but only a few (3) specifically mention vehicles and may a couple more happened around them.
2015: 20 incidents, 1 vehicle-related, 1 possibly vehicle related
2014: 25 incidents, 2 by hunters who were hunting from their vehicle, 1 of which being an intentional shot that hit someone on the next property, and a 3rd inside a vehicle.