This wouldn't be the first time MRA lost land to eminent domain. The way I understand it, the original MRA was over 50 acres with several more ranges than exist today, two of them were at 1,000 yards. When the state put Rt.128 in the took a large portion. I believe part of the Woburn Mall is now on the original range.
1000 yard range targets were in the middle of the current Lowes parking lot. That is on the west side of Route 128; just north of Commerce Way. Firing line was near the current archery range.