I have had quite a little experience with the .243. This is the only gun I use to kill coyotes. About the time I was going to purchase one of the .22 calibers, Nosler came out with the 55 gr. ballistic tip bullets. This is really a good choice for coyotes. I don’t know exactly what’s available for factory ammo in this bullet size but if you handload or know someone that does this bullet is a dandy.
I use 55gr. of H380 and have chronographed this at 4069 FPS at the muzzle. Believe me this is a screamer. This one stays flat and bucks the wind pretty well.
Again, a good choice as the.243 is very versatile.
Good luck
Marty Hahn