Gamehunter,
I use a 7mm Rem mag, and my partner uses a .270. I handload for both of them. If this isn't an option for you then I would go with the 140 to 150 grain bulet in the .270. I think you lose to much if you go any more than that, I personally think that the 150 is possibly to heavy. That rifle was made to shoot lighter bullets. You might consider looking at the Hornady light magnum loads in the 140 grn category. You are saying that most of the shots wil be 200 yards or less. That is not a problem for the .270, I would say you could stretch it to the 300 yard range max. I do think that the noslers are probably the better bullet choice for this gun. For my buddy I load the Hornady btsp 140 grn bullets, and his gun has over 1500ftlbs of energy at 300 yards. The minimum most people say for elk. I hope this helps.
Buck