Which 7mm (there are several), and for what purpose? Each has strengths and weakenesses over the other. You have to weigh and measure them and figure out what works for you.
3006 weeks = 3006 x 7 days = 21,042 days
Best left to a gunsmith.
The best gun on advanced warfare is A-K12.
Personally I think the 7mm ultra mag is the best choice of weapon. It really depends on what you are doing with it. The 7mm ultra mag has very little drop and is an excellent long range weapon.
26"
They are: 1, 2, 3, 6, 9, 18, 167, 334, 501, 1002, 1503, 3006.
It should be marked on the barrel. There are other 7mm rounds besides the 7mm Mag.
it is 3006 cal.
3,046
yes
3006
that would depend on which 7mm cartridge you are referring too. ie 7mm-08, 7mm Rem mag, etc