My rifle is a .50 TC Hawken...I used the Noexcuses 460 grain on my one and only CO elk... It shoots so well that I have have continued to use it here in NY as a deer bullet..
I cannot speak for the .54 cal., but the .50 cal load easy and are real accurate. The bullet I retrieved from my 6x6 bull was a perfect mushroom.. I would recommend that you get a box in .54 and give then a try.. Good luck..