Hey yall this is my first time here, and I feel right at home. I wanted to ask a question if I could. I am wanting to build a .30 cal rifle and was wondering about a 30-378 wea or even possibly a 300 RUM. Have any of you guys got any experience with either one of there rounds. I will reload my own ammo so I wont need to buy it buy the box, and I can decide what my new toy likes and doesn't like. Also, shooting 500-800 yds, what scope do you recommend? I would like brand and model types please. Thanks in advance.