I just bought my daugther a new rem. 700 police 223 1/9 twist and a 26" barell with leupold rings and base with a falcon scope 4.5 -18x56, I was wondering what would be the best bullet, bullet weight and powder to shoot long range (900 yards).
69gr Sierra Match Kings or 75gr Amax's over Varget would be a good place to start.
I am suprised that you got 77gr to stabilize. I could only ever get 69 gr to stabalize in my 1:9 223.