I can only speak for myself but I believe they are the best penetrating arrow on the market. I shot Gold Tips previous to shooting the FMJ's and what i found was that my gold tips were faster keeping my sight pins tighter. However after shooting the FMJ's I realized my sight pins were further apart yet the arrow was so deep into the target that it was clear the kinetic energy was with the Axis. Consider the energy it takes to deploy and drive these modern mechanical broadheads not just in but out of the animal and I think the compromise is well worth it. I shoot a Mathews Z7 at 70# with a draw length at 28.5" and have tightly grouped fixed blade grizz tricks and Mechs, Rocket Meat Seekers, out to 60yds. This season I am shooting the Swhackers 2 blade, Sonoran 3 blade and the Vortex Pro 2.5" 100grain heads and the best part is that I am confident the arrow will pass through with enough energy to deploy the large blade broadheads.
I watch a lot of shows when I am not hunting or scouting my self and have seen the penetration the Primos guys get with FMJ's superior to that of Drury and others using carbon with a broadhead that in my opinion is not so good with penetration. Obviously there was a problem with carbon penetration which is why expensive manufacturers are making really expensive weight forward models now. But if I get a 36"+ arrow and cut 8 inches off of the front to match my draw length did I waste my money? On the other end of it carbon can only be straight or broken while aluminum has the 3 possibilities of being straight, bent, or broken. In my experience the carbon core in the FMJ"s maintains the rigidness of the arrow and even after hitting some hard bone or wood the arrows still flew straight. I am no professional just a man who loves the Lord first and His outdoors along with a passion for hunting whitetail deer. I consider it a matter of principal and ethics to practice and to utilize the most lethal equipment for quick expiration and a plentiful harvest.
If you chose to buy them please get the adapter rings as they are smaller diameter arrows mating with larger diameter broadheads. Again only from my experience, steel ferrules such as the slick tricks split arrow tips until I got the rings and have never had a problem since. I am confident you will be happy if you go this route. Good luck my hunting brother.
