Are you familiar with using the “presets” in Reacomp? If yes...
I like to play around with the NY style bus compression...good for drums and bass...geared to mix the compressed signal with the uncompressed signal....if you hit the drop down, and scroll a bit, you should find it...for drums....adjust the threshold to hit a gain reduction around -3 to -4dB max...the wet mix, and dry mix sliders can be adjusted to taste...
for bass...pretty much the same...except I may reduce the default ratio a notch or two, and I shoot for a gain reduction peak of -2 to -3dB.