I just bought a SPS Tactical 223, and the hogue stock on the gun is very flimsy. I am wanting to upgrade eventually to a McMillan stock of some kind, I was wondering can I get a McMillan with an aluminum bedding block or are they so stiff that you don't need one? If they don't need one do they have to be bedded for optimal accuracy? The rifle has 1 in 9 twist rifling, I know it will stabilize the 70 grain VLD's, how are they for an all purpose bullet? Varmints and predators?