The libertys are slightly different. they are wider at 1 3/16th" compared to the sonic 85s at 1". The guy I'm hunting with tryed one of my broadheads and said they shot at point of aim so he purchased the libertys for his bow. He shoots a fast bow too. It's a parker force multiplier. He said that they dont shoot as well as the sonics because they catch air. He tuned his arrows and he got them to shoot alright but not likesonics. All bows are different so who knows? I can't wait till the season opens the 15th. After working all summer in the woods with him he said i payed it off. i feel like i stole it because i worked on stuff for hunting. We repaired blinds cleared deer trails and other stuff like that. I like doing those things so i felt like i didnt work at all. It was the most fun job ive ever had. And i'm gonna keep helping him with whatever he needs. He even tuned my bow gave me a dozen easton redlines and helped me sight my bow in. He went as far as buying my broadheads. He even offered to loan me the money for my license but i refused. With out him i wouldnt be hunting because me nor my dad has the money to afford stuff like that. There are five kids in my family and moneys tight. The guys my hero and always has been. Hes like my grandpa. My dad doesnt hunt so without anyone to teach me i'd be out of luck. Wow lol....im getting kinda mushy. Anyways u get my point. I'm seriously pumped for deer season i can't sleep so i decided to right an essay for u guys to read lol. I bet my teachers wish i would do it for them. Anyways good luck to all u guys and gals this year. Thanks Matt