Double-checked, it's 10.0gr Trailboss for 180g RN Sierra 2170's
If you want to know how much powder fits in a case, go here
and get case capacity. Then, divide that number by 15.43236 (grains in a gram or = cc). Then, go here
and get the VMD for your powder. Divide this # into your last number. This will be the grains of powder that fit in your case.
308Win Case Capacity = 56gr
56/15.43236 = 3.62873857271
3.62873857271/0.2172 (Trailboss VMD) = 16.7gr to case mouth
You can also take your bullet length, add it to your case length, subtract your COAL and use this with Pi*r^2 (d=bullet dia) to subtract the portion of bullet seated in case from your original case capacity.