The new Kifaru Nomad is the ultimate hunting pack IMO.
Nomad Loading Part 3 on Vimeo
I have used a Kifaru Spike Camp as my day pack for the past 13 years and it has yet to fail. Silent and will carry as much as I can handle. I have packed out caribou in a unit that requires you to bring...
I have a Leupold RX-IV TBR and have ranged reliably out to 885 on reflective targets and animals out to the high 600's. Not the best there is but hard to beat for the money.
I have 5 A-Bolts and 1 X-Bolt. The only modification was adjusting the trigger down to 2.5 lbs which is done with a screwdriver. Every one shoots better than necessary for hunting.
Browning X-Bolt Stainless Stalker topped with a Leupold VX3 4.5-14X40 will run you about $1,600 and is capable of your accuracy goal, or better. Personally, I would opt for 7mm Remington.