I haven't shot for groups with either yet, just quickie sight ins for both. The HM2 was sighted at 50 yds and was shooting 3 shot groups that were touching. The HMR shot 3 shot groups at 100 that could be covered with a dime. Only shot remingtons out of the HMR thus far on sight in and chucks. Have 4 or 5 other brands on hand I'd like to take to the bench soon. I've been working out of town alot since June, not much trigger time to be found.