85 grn TSX, IMR 4831 48.0 3200 2.73 OAL
100 grn Hornady, IMR 4831 42.2 3000 2.75 OAL
65 grn V-max, Varget 39.7 3450 2.67 OAL
Velocities are from a 20" barrel (Model Seven).
The 85 and 100 grain loads are at or very near listed max--approach with caution. The 65 grain load is pretty moderate, but as always work up to it slowly, checking for signs of excess pressure.
Fast, small-bore cartridges like the .243 are _perfect_ candidates for the TSX. You need the bullet to hold together and penetrate, and the TSX always delivers. Why wouldn't you use the best bullet on hand?