That is a sad story, and a hard lesson...but a few years ago, I was in the same boat.
Had a very nice custom left hand rifle
and went deer hunting...like you I got busy when I got home, was going again the next morning, and left it with Binoculars, range finder, and my sons 243 that his grand father gave him in my truck licked.
Had the keyless entry, and just threw keys in floorboard under seat, locked the truck.
My son came in late, did not have garage opener, opened truck, garage door...and forgot to lock truck..
Next morning, truck gone and all the guns, and supplies...
Took a day or two to find the truck, but all was gone...
I gave the police my numbers off my gun, but did not have it for other gun, or supplies...
Next morning after theft, they raided a drug house, about 10 miles from me, found the gun, ran the numbers..but since it took me a day or two to get them the numbers, it came up, not owned.
4 years later, when the police were cleaning out the gun vault, as it were, before crushing them, they ran the numbers....they called me and I got it back..
So, the reason I am telling you this is it could show up....you never know.