was very impressed with the way this bullet takes raccoons out of trees! super Quiet! (running a 10'5" SBR in .223 with an AAC 7.62SD-N6) like suppressed rim fire but devastating results upon impact! ive done a lot of subsonic varmint hunting and have never seen a bullet do this much damage! looking forward to getting my hands on some 77's! i hear they will cycle an AR with the right/correct set up on the gun and reloaded just so.