Match the reticle to the adjustment. Its much easier to measure with the reticle to make adjustments that way. Like already stated 1/4 MOA is .25" roughly and .1 mil is .36" at 100 yards......I don't know many people (other than my friends that shoot benchrest) that can hold .11" difference at 100 or 1.1" at 1000 yards. I shoot both MILs and MOA at extreme distance and if anything MILs is easier for me.