It will be a while but I am already planning a hunting rifle build and I am looking at scopes. The scope will be going on a .300 win mag. I want something with minimum magnification around 3-4 and max mag around 14-18 with a 50 mm bell. I can't decide if I want tactical turrets or not. I used to have a $1000 4-12x50 Swarovski and it was a great hunting scope. One of the scopes that has caught my eye is the Steiner Predator 4-16x50 with 30 mm tube for $999. There are several 44mm Swarovski scope that I would like if they were 50mm. What will be the difference in "light gathering" ability in a 44mm vs 50mm? I am mostly looking at Swarovski, Zeiss, Steiner, Kahles and Leupold. I prefer a 30mm tube and 2nd focal plane scope. Any ideas?