csid,
Welcome to Hunting Nut
I’m not a long distance shooter, I’m a predator caller. Consequently, the majority of my coyotes are killed within 100 yards or less, usually more like 50 feet. I’ve taken several coyotes with Nosler 55’s, not out of a 223 but a 22-250. The 22-250 is spitting them out at aprox. 3,600 fps mv. That’s just a tad faster than the 3000 fps you are running in the 223. At the ranges I shoot I’ve never had one of these bullets splatter or fail, even if a major shoulder bone was hit. Rest assured they can and will produce dead coyotes.
For several years now my ol’ 700 Remy chambered in 222 has been my favorite coyote rig but I’ve also killed them with 22 mags and smaller. One of my last coyotes was taken with a .17 Mach2 (.22 long rifle rimfire case necked down to .17 cal.). Yep, your right… at times, coyotes can be tough to stop but they’re not armor plated.
Just my experienced opinion….
