seebass, have you done a search on this forum for the loads you're after? It's been posted here before but to save you time, try this link:http://longrangehunting.com/ubbthrea...t=all&vc=1
Think that might work, not to sure 'bout this 'puter thingy. And by the way, is this what you've done with that shiny new Sendero, or did you put something else together? Stan do the work? Curious, 'cos I just picked up a new Sendero in .300 Ultra and am (still) waiting on a 30 inch .338 tube from krieger, heavy palma contour, fluted, stainless. Geez, what am I going to do with this stuff? Anyhow, have fun building a load. If you get a chance post some details of the rifle build.