Couldn't get on paper @25 yards - Sightmark Laser Bore Sights

I'm not new to laser bore sights. Have one (another brand) for 5.56/.223 that I've used many times on multiple ARs that gets me on paper without fail. Prior to the range I "zeroed" my optic with the laser at dusk at ~10 yards with the gun in a stationary cradle. They are simple to use and thus feel my negative experience with the 300 BLK laser bore sight is not due to operator error. At the range I used two 18" x 12" targets side by side at 25 yards with a red dot optic and was missing both targets no matter where I aimed. High, low, center, extreme right and left, no luck. I'm shooting 300 AAC at over $1/round and getting frustrated. Eventually give up and take apart the gun and visually bore sight the target then get on paper.