In the process of getting all the reloading components together to reload for a custom LR 300 win mag. I am planning on shooting either a 210 or 215 grain bullet (berger or nosler ALR... can't find either in stock), and was wondering what powders you guys would recommend. I've got some H1000 that I was going to start with... any thoughts on Retumbo? too slow? Any starting loads with these bullets seated out far would be appreciated as well... Thanks!