Oh heck, you should be high enough to rock the 165 Matrix!! Once you shoot them you won't go back, trust me the difference is huge specially when you add in some wind. I won't hesitate to blow a hole through an elk inside a grand with it!!!!
My rifle is a Savage Model 12 in a Bell and Carlson varmint stock, my optic is a cheap one, 4-14 WOTac but when I dial it goes where I crank it so it works for now. I've worn a few barrel out and the current one is a 27.5 in Lawton with a Mini Muscle brake, the reamer I used is set up with .180 free bore and .310 neck which is perfect for the 165 Matrix and I'm hoping the 170 Berger will be about right as well. The rifle is sweet but heavy, works good for near the truck
865 yard Bull