Getting ready to purchase a new barrel for my savage 110 in 7mm-08. I plan to use it for some deer hunting but mostly target practice. What would be ideal barrel length for 600-700 yards max pushing 162-168 gr bullets.? I was planning to get a 24" barrel but hear the shorter barrel works just as well. Any advice would be great. Was thinking 22" varmint .800" muzzle end, but might be too heavy to carry in the field.