I do extensive searches before trying a new load which will be 168 VLDH, retumbo, win. super brass. All loads I've seen includes f210 or gm210m primers ( both seem to be nonexistent till next year). I have cci 250, and WLRM . Has anyone had luck with other primers and this combo? Is it worth my time to try since all other recipes are calling for the hottest primer?