I would use CFE223 for the 100grain and 4350 for 117s
Remember that the loads given for most 250 loads only run a 45,000 cup for the old savage 99s with judicious loading this can be increased quite a bit. Remember that it's the same case as the 22/250 and the credemore some the case and the rifle can be loaded up to 52,000 cup with careful loading.
ALWAYS USE CAUTION WHEN LOADING AND WATCHOUT FOR ANY SIGNS OF PRESSURE