Just dialing in my Easton Axis 300 spine, 500gr arrows with Deep Dix inserts and using the Helix 125 gr broadhead. 
I believe this pushes out around 95 fps of kinetic energy. 
I'll be using this setup for antelope, elk and deer. 
A little overkill? Maybe. They are destroying my Rinehart 

 Hope to get a chance on an animal this season.  
Here's my last shot if the day at 80 yards. 
	
	
		
		
	
	
Rudy