Vapodog you brought up a very good point. The swifts are machined and the noslers are extruded. The original Nosler partition was also machined but evidently was very costly to produce and they switched to extruded. One of the things I like about partitions is that they have a pretty decent ballistic coefficient compared to say a Trophy bonded or something similiar and yet are very destructive on Game and work in a very reliable fashion.