In-lines are legal.
Single barrel guns only, no double barrels.
No scopes, open or iron sights only. Fiber optic sights are legal
No peletized powder. loose powder only
No smokeless powder, only BP and its substitutes.
No sabots, bullets must be full bore.
Bullets can not exceed twice the bullet diameter in length.
Bullets must weigh at least 170 up to 50 caliber and above 50 caliber they must weigh at least 210 grains.
Moose and elk minimum caliber is .50
Deer pronghorn and bear minimum caliber is .40
209 primers are legal


Oh yeah, I forgot to tell you good luck on your hunt Tex.