Here are some examples of how "your" is used in cowboy slang:
* "Your lookin' mighty fine today, partner." (You are looking mighty fine today, partner.)
* "Your gonna need a stronger rope for that bull." (You are going to need a stronger rope for that bull.)
* "Your sure takin' your time gettin' back to the ranch." (You are sure taking your time getting back to the ranch.)
The use of "your" in place of "you're" is more common in spoken language and informal writing, like a Western novel or a screenplay. It's not considered grammatically correct in standard English, but it's a recognizable and often charming aspect of cowboy slang.