I plan to purchase a 460 S&W Encore barrel for the upcoming Iowa deer season.

2900 fps out of a rifle barrel, with 200 grain bullets, should do the trick at some distance.

Hornady 200 grain

460 S&W video, around 2900FPS

"Those that think they know everything are annoying those of us that have Google." - Dr. D. Edward Wilkinson

Note to self: Never ask an old Fogey how he is doing today.
Revised note to self: Keep it short when someone asks how I am doing.