How far does wad stay on sabot slug?

The wad typically remains in contact with the sabot slug until it exits the barrel of the shotgun. After firing, the wad separates from the slug shortly after leaving the muzzle, usually within a few feet. This distance can vary depending on factors like the type of ammunition and the design of the wad and slug. Ultimately, the wad's primary function is to protect the slug during its travel through the barrel and to ensure stable flight until separation.