Place turkey skin-side up, flat on the grates.
Smoke until internal temp hits 165°F (74°C) in the breast and 175°F (79°C) in the thigh. This takes ~3.5–4.5 hours for a 12–14 lb bird at 275°F.
Baste with cowboy butter every 45–60 minutes for max flavor and color.
Rest: Remove from the smoker and let rest loosely covered with foil for at least 20–30 minutes before carving.