KD I think you will love the 260, everyone I know that has one does. There's a few advantages going with the 260.
Short action so gun will be shorter, lighter and faster
If you don't like it you can change it to a 7mm08, 308 or a 243 with only a new barrel.
You can make brass from the 7mm08, 308 or 243 (Lapua now makes 260 brass so you probably best to buy that).
If you do make your own 260 brass just be carefull your kids dont get your ammo mixed up with other ammo like your 243, even if you buy 260 brass it is a good habit to always check the head stamp before putting ammo anywhere near your gun (if you have 2 different interchangeable rounds).
What gun do you have your eye on KD?