6.5 Creedmoor 140GR Black Hills OTM (MP2406.5CREEDN6)6. 5 Creedmoor 140GR Black Hills OTM (MP2406. 5CREEDN6) Black Hills has worked for years perfecting the 6. 5 Creedmoor 140 grain OTM to optimum precision and reliability for use in AR 10 type platforms such as Geissele, Knight's, LaRue, and LMT precision semi automatic rifles. Now, you can get the same performance demanded by our Military forces, the men and women who "stand ready in the night to inflict violence upon those who would harm us."