It's pretty easy to find SAT sample papers online, but it's super hard to find the Subject Test sample papers.
But I walk you through the SAT Subject Test sample papers which are of College Board, but CB hasn't released officially them.

CB released the SAT Subject Test practice books of Physics, Chemistry & Math. But the answer explanations aren't done well. By acknowledging this, TestprepKart made the video solutions of the 8 SAT Subject Test sample papers and made them live.

[url=https://www.testprepkart.com/campaign/sat-test-series-&-solutions.php]Buy online SAT Subject Test series[/url] here to dig into the details.