I have been wanting to get a AR-10 in .308 (possibly the new .338 Federal!), but the weight is a factor. With the 6.8, I can get a more compact package and a lot smaller price tag.
I would be hunting in thick cover where shots are not very far. Deer would be moving very fast and shots would be at varying angles.
What are the heaviest bullets I can shoot without taking up too much case capacity and sacrificing too much performance? What would be a good bullet for me? I would like to use something that gets good penetration when hitting bones (shoulder, brisket) and will still hold together fairly well.
I use a .280 for my "normal" hunting situations (stand, stalking). It works very well and I am very confident in my abilities and my guns abilities. With my handloads that I use for hunting, the bullets are leaving the muzzle at over 3,000 fps. I know that is a little fast and not needed, but that is how my gun likes them.
I am not really that familiar with the SPC's performance. Does it have what it takes?
I still want an AR-10 in .308, but for now an AR-15 platform based round is something that I am interested in. You can never have to many guns anyway, right?