The court used strict scrutiny in deciding the case. Judges and Nelson and Lee, who were Trump judicial appointees, were in the majority, while Judge Stein, a Clinton appointee, dissented. A key discussion is available here:
the historical record showed that the Second Amendment protects the right of young adults to keep and bear arms, which includes the right to purchase them. Therefore, both California laws burdened conduct within the scope of the Second Amendment.Jones v Bonta, May 11, 2022
A copy of the Court’s opinion is available here.
An example of the write up that Dr. John Lott did for the case is available here.