A lot depends on how many trees are around your house, as to whether they will come back from 3 miles or not. Rollers have almost none, if any at all, homing ability. What gets them back to the loft is their ability to see the loft from the sky, or familiar things. My rollers used to get blown by the wind a bit too far, to where they were on the other side of the woods from us. Maybe half of our 5 acres are wooded. They got lost. Found one sitting on the powerline up the road looking around. Saw me, thought "food" and landed on our truck. I was able to catch it and bring it back home.
Homers are always the breed to go with when releasing outside the property. Although others may do it with some work, better safe than sorry in my opinion.