PJ I am still around and taking in all of the information provided. I have enjoyed reading all of the post from fellow members here on the fire. I do understand that the B.C. is relative to the bullet and not the chambering of the rifle. I was speaking of the chambering’s that are cut for the higher bc bullets using barrels twisted for such bullets as well. (6.5 PRC, 300prc). I haven’t been fortunate enough to take a elk yet and will continue trying this October. I will be sticking to my 30/06 using 165 accubonds. Again I appreciate all of the discussion the thread has brought about.