I have had great results with several SMK/TMKs.
.224" 69 SMK @ 3033fps on javalina, coyote, and doe mule deer
.257" 100 SMK @ 3080fps out to 1327 on coyote, and several javalina and mule deer
.264"/6.5mm 142 SMK @ 2830-3155 on a few mule deer and several coyotes, and seen them at work on pronghorn too
.264"/6.5mm 150 SMK @ 3117fps on pronghorn and coyotes, awesomeness, DRT
.284"/7mm 183 SMK @ 2970fps on coyotes and one cow elk, devastating
.308" 175 SMK @ 3350fps on bull elk, one of the fastest, instantaneous deaths I have ever witnessed @ 160 yards
.308" 210 SMK @ 3100 on bull & cow elk
.338" 300 SMK @ 2800ish on a bull elk...wow (not mine, but witnessed)
I was going to run the .243"/6mm 110 SMK in my 6CM, but the 105 Hybrid shoots so good, I can't force myself to stray from it.