100 fps is factory data for a case step in caliber with like pressure........
It's also why up to 165 gr the 308 is in a dead heat with the 06' .......
It takes roughly 5,000 psi or 5 gr of most powders to get it in a 30 cal .

2800 fps in a 25 cal 115/117 is nominal in deference data for the 93/95 Mauser in 257 Roberts and start loads in the 25-06' . It probably won't hurt a 99 but it will be hard on the pre war Savage bolt guns and Spanish Mausers.

Good information and data .