Thanks for the comments. I'm having a problem with coyotes running off after the shot, very little on the blood trail, and not being recovered. I started loading this bullet because of the great feedback I've read.

Let's assume shot placement is correct. I think next I have to take a look at my load, maybe not getting proper expansion.

For the experts, I'm loading 18.0 gr of IMR 4198, running them out of a R700 SPS Tactical (20" bull barrel). Any thoughts?

SouthTexas36,

If you like the 55gr., try the 75gr.
Devastating on coyotes and wind doesn't effect them nearly as much.

I know at least one manual suggests a little heavier charge than that as max, there may be others as well...but, have you considered moving on to a powder that would give you better velocity, and presumably better bullet performance? I'd suggest Benchmark (my choice powder for .223), H335, TAC, BL-C2, W748, H322, or something along those lines. You're probably getting around 2700 fps (but could be quite a bit less depending on your rifle) with your load, while passing up a potential of around 3250 fps, maybe more. I think that bullet ought to be dropping any well-hit coyote in his tracks if the range is short even at lower velocities, but if they're out there a ways them maybe not. I think more velocity would make a real difference...especially if it's on the order of 500 fps more.