How much kinetic energy do you need for musk ox?
Musk ox is heavy & dangerous game (North America). The widely used bowhunting guideline puts the minimum at roughly 80 foot-pounds of kinetic energy, with heavy single-bevel. Arctic tank with a bossed skull and heavy bone. Heavy, high-momentum arrows only.
Check your setup for musk ox
Total finished-arrow weight (250 to 750).
Measured or IBO speed (100 to 450).
What can you hunt with this?
Your setup against real game, worldwide. Tap an animal for the full verdict.
Your 73 ft-lbs is a little under the ~80 ft-lb guideline for musk ox.
To clear it: about +16 fps, or about +49 gr of arrow weight. And a heavy single-bevel for the bone.
A general guideline built on the published bowhunting energy bands and penetration research, not a rule. Shot placement, a sharp broadhead and clean arrow flight matter more than any single number. Check your local minimum-energy regulations.
This calculator is one tap away in the field, free, with your whole hunt.
It is built into the free hunter app, alongside everything you need on the hunt and after it. No app store, no cost, and it all works offline deep in the bush.
Musk ox: common questions
How much energy do you need to shoot a musk ox with a bow?
Musk ox sits in the heavy & dangerous game band, with a widely used guideline minimum of about 80 foot-pounds of kinetic energy, paired with heavy single-bevel and a well-placed, broadside shot. It is a guideline, not a rule: shot placement and a sharp broadhead matter more than any single number.
Is my bow enough for musk ox?
Enter your arrow weight and speed in the calculator above and it tells you instantly whether your setup clears the ~80 ft-lb guideline for musk ox, and what to change if it does not.
What broadhead is best for musk ox?
Heavy single-bevel is a sound choice for musk ox. Arctic tank with a bossed skull and heavy bone. Heavy, high-momentum arrows only.
Is momentum important for musk ox?
Yes. Musk ox is heavy-boned, so momentum, arrow weight and a strong single-bevel broadhead drive penetration as much as raw kinetic energy. Build a heavier arrow and keep the shot broadside behind the shoulder.
Method & sources
- The physics.Kinetic energy and momentum use the standard archery constants (7,000 grains per pound, 32.174 ft/s² for gravity), so results match the Easton and Realtree calculators to the decimal.
- The energy guidelines. The minimum kinetic-energy bands by game size are the long-established bowhunting guideline popularised by Easton Archery and widely used across the sport.
- The heavy-game refinement. For large, heavy-boned animals we weight the verdict toward momentum and arrow mass, following the penetration research of the Ashby Bowhunting Foundation (Dr. Ed Ashby), which found momentum, arrow weight and structural integrity, not raw speed, drive penetration through heavy bone.
- Speed figures. Arrow speed relates to the IBO and ATA rating standards published by bow manufacturers; a chronograph reading of your own arrow is always the most accurate.
- Regulations first. These are guidelines, not law. Always meet your local minimum draw-weight and kinetic-energy requirements, and let shot placement and a sharp broadhead lead every decision.
Maintained by the HuntDesk team. Last reviewed July 2026.
More North America game
See the full arrow calculator for every species worldwide.