Colt guy
24x will work beautifully with your Savage .308.
I too would prefer 1/4 inch adjustments but you're the one who is going to use the scope and adjust it so fit your preferences.
24x magnification gets the most out of my Savage.
I started my 10 FP .308 withy a 15x scope and when I went to 24x it really helped with the longer range accuracy, especially when you are tuning loads at the bench.