Mainly because of new powders and better bullets you can really make a 25-06 shoot real good.And if you use a high quality barrel you can have a nice tight chamber and get phenominal accuracy out of it.Then you buy lapua 30-06 brass and neck it down and turn if necessary to get the right neck thickness.It may use more powder but the performance outweighs the extra cost of powder.Have fun and maybe you just gave me an idea to make my long action into a 25-06.I havent owned one yet but my friends love them.You can also ackley improve them for more performance or just the fact of the steep shoulder will make brass that almost never needs trimming.