I have shot ACC 360's since they have been around, long time. The FMJ IS basically same product but built with alum. on the outside. Several of my friend shoot comp. My hunting buddy is MT state recurve champ, but he can shoot 6'' group at 100 yard with compound. I see thess guys go back and forth all time blazer vs 4'', Fmj vs ACC. tHEY ARE ALL GOOD product. I set up a lighter bow for stands and speed goats 62# allegaince,45/70 cheeta 335 gr. I punched these in one side and out the other on elk also. But normal elk set up 410 gr ACC, tipped w/ steel force fat head.The newer fast bows may need stiffer spine, my buddy had to go to371 for his broadheads out of a Destroyer, Im shooting superslims out of mine but less weight and shorter draw. I shot 21 animals one year with the ACC set up up to 1000# eland.When I was getting set for that hunt, I shot my bow every day for a year and most for the next 6 mnths. Cold first shot, I would shoot a 5'' BUTTER dish lid at 50 yards.Start my shooting that way.PRACTICE, PRACTICE