The Brass inserts in my FMJ's weigh 100 grains alone add 125 grain Slick Trick to that and you have 225 grains on the end of that arrow for 20+% FOC. If a brick gets in the way no big deal

There are adjustable weight inserts for ACC's as well and I have them on my 3-39's. I add just enough to get 12% FOC with my hundred grain Slick Tricks. Those are my speed arrows when I hunt out west.

Dan