30-378 Cartriges \"what do you use?\" I'm currently using 165 weatherby ballistic tips for deer. I was thinking about using 150 grain BT? Any thoughts here. My goal is to shoot deer at 1000 yards, my furthest has been 643 yards. I've read what I can, but is there any more information books, articles, that would help me become a better shooter? I just started rifle hunting a few years ago so any information is appreciated.