Actually weatherby offers several loadings for their line of cartridges.The cheaper loads use hornady bullets which are certainly not premiums.They do cost significantly more than other manufacturers charge for their loads with cheaper bullets.The weatherby loadings with partitions cost a great deal more and once again are more expensive than premium offerings from federal or others.The price for a box of 300ultra mag loads with partitions is $50 here in canada.Weatherby 300 with partition bullets runs $75 at the same store for a difference of 50%.A little of that difference may be for better brass but most of it is for the weatherby name.