13MWZ are Wrangler blue jeans,if you ever chased cowgirls around you would know that.
I wear jeans most of the time depending on the weather,and if the weather gets cold pull a pair of woolies over them.I would not worry about camo for a Rifle hunt.I wear a camo water proof jacket and layer my clothing so whenI over heat I can take my coat off,and wear my wool shirt.
Dress in layers for the weather,if the weather is in the 30-40 degrees you can dress comfortably with a light pair of long johns,pants,tee-shirt,long john top,wool shirt,coat and orange vest.Get a good hat,gloves socks and a very well broke in pair of boots,basicaly buy them now and were them every daytill June.
BBJ