I'm debating getting a Remington 700 or building one. I would use it for competition and would love for quatre size grouping at 1k yards. Also debating which caliber to go with for that distance. This would be my 1St long range rifle. Here are the calibers I'm debating; 6.5x47 lapua 300 win mag 300 win Or 308 for the simple fact that ammo will be easy to find. As far as parts id probably go with shilen or AAC. What are your thoughts?