Tumble lube, stored in basement, container is bread loaf pan, two years later load and shoot with no problem. I have rescued cast and lubed bullets from scrap yard that all worked well. Some commercial stuff had to be at least 10 years old based on the price sticker still on the battered box sitting in a hot scrap yard bin. Some red lubed cast bullets in coffee cans where the bullets were no longer shiny due to age, shot fine.
Commercial has the trauma of long distance shipping and inside of truck can easily be over 100* going down the road. Then gets bounced around a whole bunch getting put into stock at wholesaler, shipped, unloaded into stock room or shelf, transported to reloaders home, then tossed onto loading bench. That lube has to be pretty tough, hard and sticky to hold up. Our stuff gets lubed on the bench put in container and then handled and transported from bench to shelf, and shelf to bench. Not a lot of chance for damage as long as the climate is not really hot. And even then if they are not moving why would the lube be damaged unless the lube ran out of the groove at storage temperatures?
I'm in Michigan so not going to see temps like Arizona, Texas, and Florida. Still if bullet is just sitting there it would have to be hot enough for the lube to flow out of the grooves. 45/45/10 at Michigan basement temps works fine in bins.