My Dad is looking to buy a LR elk gun and asked my opinion. I personally like the 338 Lapua w 250 or 300 gr bullets. But he don't like spending 2$ a piece for brass. I tried to explain the difference between a high BC bullet starting slower and a lower bc starting faster but I didn't have any numbersto substantiate my claims. In your opinion, what is the better deal as far as ft lbs energy and flatter ballistics. He's looing at a Rem 700 300 or 338 Ultra mag. I'm not sure what these calibers are capable of safely. I was thinking of 3300 fps w. 300 ultra and 180 gr bullet or 3100fps w/ 338 Ultra and 225 gr. bullet. Both will have a 26" barrell. He wants knockdown power at 7-800 yards which equates ft-lbs. Any help good-bad or indifferent is appreciated in advance.