If a person is serious about taking big game at longer range with a bow, there are a few things that need to be considered.
- You need to shoot a heavier than normal arrow. I would think something in the 6 to 7 grains per pound. At minimum something over 400 gr. If you talk to guys shooting rifles at long range, they are shooting heavy for caliber bullets.
- Keep the speed down. A good speed should be something in the 280 fps range. Broadheads aren't as finicky at that speed. If your speed is up there, shoot a heavier arrow to slow it down.
- Low profile vanes help maintain downrange kinetic energy. You basically use just enough vane to do the job.
- Bow has to be perfectly tuned. I go through a bunch of different methods to make sure my set up is correct.
- I personally use mechanicals. It really helps with the wind.
- Use the new skinnier shafts to help also with wind drift.
- I also use a target style sight. My sight I can dial to the yard at the longer ranges.
- I don't have my arrows on the bow. I carry a hip quiver of some sort.
- I also have a target style stabilizer set up. I have a 15" front stabilizer and a 10" side stabilizer.
My personal set up produces about 94 ft lbs of kinetic energy. I shot my biggest mule deer at 91 yds. That buck was #6 in the desert mule deer with a bow. I shot him through the front shoulder and the broadhead exited the off side just behind the front shoulder. At that time I was shooting a 500 gr arrow at about 275 fps. It was approximately 84 ft lbs of kinetic energy.
Light arrow real fast slows down real fast, a heavy arrow maintains its momentum. I've shot a few animals at extended yardage, but there is a lot of preparation involved.