Re: Reloading help for .270 Win
H4831 is the go to powder for the .270 Win. CCI 200 will light that powder fine without going to a magnum powder. The Nosler BT is a good bullet.
I suggest that you try the 59.5 grain load a 300 yards and see how it shoots. Some bullets shoot much better at a distance then they would indicate off a bench at 100 yards. The opposite can be true also, that bug hole group at 100 opens up dramatically at extended range.
If you are really not happy, you could try Burger bullets, but I have not done so myself.