I've got a new stock Remington Sendero II in 300 RUM. I just bought an EGW base, Bu tactical low rings and had mounted a Vortex PST 6-24X50. I'm looking to sight it in this weekend, but first I need to make up some loads. I've got all my reloading supplies and a month or so ago, I bought the Berger 210 VLDs (the hunting bullet) and have a bottle of Retumbo. I've got virgin brass and just need to pick up some primers. I really don't have a lot of reloading experience. Can anyone give me advice on grains of Retumbo and COL using the ingredients I listed above? If I can get MOA, I would be extremely happy. Not sure I have the shooting experience to really work on loads to see exactly what my rifle likes. Said differently - I don't there is any way I could read my groups and determine if that was the shooter or if I should incread a half grain or COL a bit. Just looking for a good place to start loading and sight my rifle in. And then - shoot it through a chrono so I can send my info off to Vortex to get those custom torrets. Any advice would be greatly appreciated!! Thanks.