I'm not a backpack hunter but when I do cary a pack I do so with one of these Remington 700's
1st Gen Ti stocks
Steel trigger gaurds
VX3's in DD
One for 150 grn Accubonds
One for 180 grn Accubonds
Both chambered in 30-06
I have a 280AI in a Kimber Montana with a CDS V3 that can go too