There are a lot of Optima Pro and Optima shooters out there. Some of the accuracy they claim to get from the rifles are most impressive. The only thing I might offer is, why limit yourself to a .45 caliber? Get a .50 caliber and load it down. They sell 10mm blue MMP sabots you load a .40 caliber 200 gr shockwave in and can shoot that, same as you would the .45 caliber. Why limit your rifle and your hunting opportunities. Some western states have a .50 caliber limit on their hunting. Just something to think of.