LOL!
Believe it or not, TAC's been around almost 20 years now, and I was one of a few gun writers invited to visit Ramshot headquarters in Miles City, Montana and shoot some prairie dogs with their powders. They didn't have vast amounts of TAC loading data back then, but I noticed that what they did have came pretty close to IMR4895 data in various rounds. Since I've always figured that one of a gun writer's jobs is to experiment, I started trying TAC in various other rounds. Eventually some bullet companies started working up data in other rounds as well, providing even more room for experimentation.
In general, I have indeed found TAC worth a try in any round where IMR4895 is a good choice.
