After subscribing to this web site for several years, I still haven't got my feet wet. Seems like there is much to learn. I'll get into LR shooting class for certain. Mean while, I'm contemplating about having a rifle built. This will be dedicated for learning purpose. I've narrowed my cartridge choice to either 6mm br, or 6mm SLR. I would like to spot my shots, and don't mind a muzzle brake. The rifle should be fairly portable, so I have a goal set for 13lbs-14lbs gun, ready to shoot but without bipod. I'd like to shoot up to 1km. I'd also prefer a cartridge that will allow barrel to last up to 3,000 rounds with very good hunting accuracy. This will not be a competition gun, so I'll shoot slow. What would you guys recommend?