I've shot many compressed loads in .260s using H4831 or SC with bullets from 120 to 140gr. and have observed no adverse effects. As long as you aren't exceeding book max, aren't seeing pressure signs, and your velocities aren't unexpectedly high, you should be fine.

John

If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then I will hear from heaven, and I will forgive their sin and will heal their land. 2 Chronicles 7:14