On Saturday, two brothers, Cameron and Cody, whom I work with, went up behind my house on Saturday for Cameron's cow elk. Cameron had a bit of trouble with Cody's 300 Win Mag. He missed 6 times at two different cows. I offered to loan them my light 6.5x47 and they took me up on the offer. Yesterday, I instructed them how to dial up my NF 2.5-10x32 with NP-R2 reticle and printed up a drop chart. I wasn't worried about the wind as weather.com forecast calm to 2 mph.
Got a call about 3 pm. The cows stay up on the steep Western facing mountain behind my house. Cody coached Cameron into a 450 yd killing shot. The Barnes 127 gr LRX, running 2830 fps, zipped through both lungs of a very large cow. She ran about 30 yds before piling up and sliding down steep face in 3' of snow, stopping in some Gambel Oak brush.
I put down a Montana 3x4 mulie @ 500 yds in October with the same rifle/load. Worked with equal success.