I should probably shut up and let lopes have a bad rep,but in my experience,the natural forage for them is sage and it works fine.If you do a few things right,there is no "wild taste".It could be store bought.
Cooking does not need to be more complex than: Backstrap,chops,browned in garlic butter.Round,slice thin,cure w/Morton tenderquick,smoke a few hours,dry to jerky
Everything else,shoulder,trimmings,etc,stew meat size pieces,flour them,brouwn them,eat them,maybe a little lLawreys and pepper.Want a little gravyishness? spill a little beer in to deglaze,Yeah,you can go to stroghanoof or ?
But,antelope season is warm and early.Get the hide off fast,and get the quarters in a refrigerator the same day you shoot it.
Ive noticed critters often have a baseball or so sized full bladder.Its real good if you can identify and remove a bladder without spilling it into the body cavity.Really,go buy a nice ribeye,whiz on it,marinate it a few hours/days,it will have a wild taste.Think wire zip ties.
Unless you have a walk-in cooler and can maintain temps in the 30's,FORGET AGING!!! Hanging meat at 68 degrees will disappoint you.
For myself,I bone everything.There is a taste from bandsawing through venison or antelope bone that I do not like.
But really,try ice cube size pieces,seasoned and browned in garlic butter in a cast iron pan.Leave some pink,and try it
Now,I forgot the handle of the gentleman who thought elk was not palatable.
I think perhaps your elk was mishandled.