Re: Bullet Worthy of a Once-in-a -Lifetime Trophy?
If this is a factory rifle, try 41 to 43.5 grains in 0.5 grain increments. You will find a good load there at top speed.
No need to go with the 150 or 165 AB, the 180 will do well. I am glad to see you are concidering a more concistent bullet well suited for that once in a lifetime buck. He deserves no less.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.