Lablover,
Since I am in the business of building custom rifles and developing loads for those rifles, I keep every partial box of bullets I ever use on the shelf just in case I have a project come in that could possible use those bullets for testing down the road.
You never know what rifles you will pick up or have built down the road and those bullets cost nothing sitting on the shelf so might as well have them around just in case.
Also, its nice to have them if you have a buddy that wants to test a different bullet, you can trade test bullets and save money instead of buying a new box to test.
Good Shooting!!
Kirby Allen(50)