Not with the 6.5 Creedmoor... but I know with my 7mm-08 the 140, 150, and 160 gr Nosler BT's all shoot better when I can lengthen that COL to maximum allowable by the rifle's magazine. The Sierra Game King 130gr seem to not matter. This is out of a Remington Mountain Rifle with a 22in barrel (my antelope and deer rifle).