We've use it for about three years now. We start the calves with creep on Breeder-Grower, then gradually add-in Cattle Blaster. The more finish you need, the more Blaster to feed. For fat steers, probably feed straight Blaster. For yearling heifers, we feed about a 50-50 mix of Breeder Grower and Blaster. A lot of heifers will need Breeder Grower only, unless you want them fatter.
It's good feed, and expensive like they all seem to be.