I have a model seven action in 308, whats the best cartridge for a bit of long range/ target and be able to handle the odd Sambar??. I am thinking of the 284win, anyone got anything better. Oh yeah I want to keep it fairly cheap, i.e. I'm a machinist so can do the barrel myself and don't want to have to get any outside machinig done, so will have to keep the 308 bolt face.