I'm just about to start my build with these bullets. I'm just waiting for my reamer to come and my action to get back to me from being blueprinted. My reamer should be here next week and my action within 2-3 weeks. I'm building a 25-284 with a 7.5 twist Krieger sendero contour. My reamer will have .145 freebore. My action will be a fully blueprinted 700 long action. Should be a fun round. The BC is .330 g7 at 2900fps on these bullets. I'm thinking I should be able to drive them past 3000fps fairly easy.