22 CM or 6 CM for coyotes

[tdanjohnson]

Backstory. I have a friend who recently built a 22CM for coyotes. After trying several factory ammos and killing several dogs he has decided the 22CM isn't for him and he's changing his barrel to a 6CM. During our conversation a few questions came up that I would like to get other opinions.

What has a higher MV between 22CM and 6CM assuming same barrel length, bullet weight, and other factors such as powder? Why would one be preferred over the other?

Whats more important on coyotes? MV, bullet weight, kinetic energy or choice of bullet? Im intentionally leaving out shot placement.

 

[Jtb.kfd]

Depends, when you say "more important", what is your objective, is it to drop them in their tracks or preserve fur. My kids and I use coyotes to test different loads/bullets on. Bullet construction/design within recommended velocity parameters are what I pay attention to when choosing loads. Energy isn't part of that equation for me. I take what a bullet is designed to do at the recommended velocities, load some up and test them on smaller game to see if the desired result is achieved. Between the two calibers you listed, they are way more than what's needed to kill a coyote. The decision between the two would land more on other uses I would have for the rifle.

Specs for the attached pic: Quartering right shot with the bullet placed on the front shoulder at 60yds.

6mm Creedmor
103gr ELDX
45gr RL 19
3156 fps
2270 ft lbs at the muzzle

 

[Nine Banger]

They're functionally the same for what you are describing.

You can shoot short bullets with low BC in both barrels.

You can shoot long bullets with high BC in both barrels.

6mm bullets can be a little bit heavier.

The 6mm Creedmor is probably "not for him" too since they are so similar.