Black Powder

Is it legal for me to carry a black powder pistol in Texas if im only 18 years old? what about in my car?

I know its legal for me to buy black powder pistols here, i have a .44 ruger old army. My reason for carry is protection, its a dangerous world out there.

“A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.”

Splitting lumber with black powder