With the Genesis, I would try some powerbelts. Since you want to hunt elk, get some of the heavy as your rifle will shoot accurate kind. Also I guess they make a new Powerbelt that is designed to penetrate better. I personally have not shot them but others have. I hope to hear of actual hunting stories where they are used on elk and how well they did. Powerbelts big draw back is their cost.

You might also want to look as some .503 No Excuse Conicals in 460 & 495 grain. These are a well made conical and work good in many inlines and T/C rifles. Then there are BullShop Conicals that can be custom made to your rifle. My understanding is.. if you want to try some Bullshop coincals, place your order soon as he will stop taking orders soon.