I think you'll find "sabot" related to another word: "sabotage."
Most folks usually say that word "sah-buh-tajz" or "sah-boh-tajz."
I don't know anyone who says "Sa-butt-ayge"
The word "sabot" means wooden shoe, among other things, and "sabotage" was the act of ruining machinery by throwing a wooden shoe into the works.
The "sabot" for shotgun slugs or muzzleloaders is a "little shoe" that fits around the projectile. Hence "sah-bow" or "say-bow."
Lots of words get corrupted once they get into another language.
For example, there is a state park in Arkansas called "Petit Jean." I won't recant the whole story of where the name comes from.
But in French, it would be pronounced "Puh-teet Zhawn."
In Arkie, it gets pronounced "Petty Gene."
hillbilly