Get out the actuary tables, and determine what you have left subtracting your age from the terminal number. Figure that you may not be able to get to a range probably for all that you have left. Divide how many rounds you have now by the remaining years. Now some of you might discover that you have alot of work ahead of you to use that all up in time remaining. If you are a kid, well, maybe wait awhile to do your figuring. Maybe there is an idea called "He who dies with the most ammo, wins" but that is kinda pointless.