yeoman

I know Knight use to make their own sabots, in fact one time talking to Del he indicated that he bought Knights, .458 sabot dyes and equipment.

At onetime I believe Knight supplied Hornady with their sabots also.

They, the different companies, are a little closer to providing a uniform color for a certain caliber but you still can not always be sure and then there is MMP that makes 3 different 50 cal black sabots for .451/452 bullets.