I'm usually a heavier bullet for caliber guy but I shoot the 140 AB in the 7 Rum at a sedate 3425 fps. It didn't impress the 6x5 bull I shot 1st gen. Oregon elk season. He just laid down and took a dirt nap. The bullet did its job. Wouldn't hesitate to use it again even though I usually use 300 rum 200 AB on elk. I can push the 140 alot faster but its very accurate with 7828 at this velocity. Retumbo can get you to 3550. So...I would not hesitate to use a prem 140 on elk. Cup/core I'd step up to 160 at least. Just my opinion