I used TAC to work up a plinking/groundhog load for some Speer 110 gr hp's through my Marlin 336 and my BIL's Henry. Western supplied some data since they don't list a 110 gr load for TAC. I didn't spend much time on load development, but I managed to get a repeatable 1-1.25 MOA group out of the Marlin (scoped) and 3-4" groups from the Henry (terrible open sights). Velocity was around 2630 fps.