^ lol, if you're going to harp on not posting the law...perhaps you should actually post the law and not random excerpts of articles, which don't address the issue at hand.
Long gun open carry is generally(I don't know if there's preemption and/or grandfathered laws from counties/cities that prohibit it) legal in Texas.
Quote:
Sec. 46.02. UNLAWFUL CARRYING WEAPONS. (a) A person commits an offense if the person intentionally, knowingly, or recklessly carries on or about his or her person a handgun, illegal knife, or club if the person is not:
(1) on the person's own premises or premises under the person's control; or
(2) inside of or directly en route to a motor vehicle or watercraft that is owned by the person or under the person's control.
(a-1) A person commits an offense if the person intentionally, knowingly, or recklessly carries on or about his or her person a handgun in a motor vehicle or watercraft that is owned by the person or under the person's control at any time in which:
(1) the handgun is in plain view; or
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Source
Notice how it only addresses handguns?