Curious question: Since The Supreme Court didn't grant certiorari for Gray v. Jennings because of not having been tried on its merits, is the case automatically returned to the lower court, with the instructions by SCOTUS to the lower court to "try it again" based on its merits? Or is this the end of the line for Gray v. Jennings?
This is one of those questions that will get the typical lawyer answer of "it depends". Typically when the SCOTUS denies certiorari in a case that is an interlocutory appeal such as Gray v. Jennings, there is no accompanying order that the case be tried on the merits. In cases like Gray v. Jennings how far the case goes will generally be a question of how deep are the plaintiffs' pockets. In a case such as this one where the prayer for relief in the initial complaint is for declaratory relief, the attorneys bill by the hour.
What happens with Gray v. Jennings may hinge upon what the SCOTUS winds up doing in Snope and Ocean State Tactical. If they are re-conferenced on January 17 and there is a grant of certiorari in those cases for this term, then the parties in Gray v. Jennings may stipulate to stay further proceedings pending an outcome of those cases since the outcome would ultimately be case determinative. If the SCOTUS were to apply Heller's "in common use" and some of the dicta in that decision relating to long guns to find that the AWB and magazine bans violate the Second Amendment's plain text, then I imagine that the plaintiffs in Gray v. Jennings would move for and receive a grant of summary judgment in their favor.
If on the other hand SCOTUS passes on Snope and Ocean State Tactical until next term, which could happen since we're fairly long in the tooth into the 2024-2025 term, assuming that the plaintiffs have the means to do so, litigation in Gray v. Jennings will proceed to discovery and ultimately to pre-trial motions practice, and if neither side is granted a summary judgment at the end of motions practice, then the case would be tried on its merits. Whether or the pre-trial motions practice and a final trial disposition would occur in Gray v. Jennings before a decision in Snope or Ocean State Tactical either during the tail end of the 2024-2025 term or early into the 2025-2026 term is anyone's guess.