10% FOC is considered the minimum safe standard for stabilizing a large fixed blade broadhead according to just about everyone.

FOC has nothing to do with arrow weight.It's a value for how much weight is toward the front of the arrow. Meaning that you can have a low FOC arrow with a heavy weight.You can build an arrow with a 100 gr tip that would weight over 500 gr that would be just as effective on a deer as the 23% FOC arrow. High FOCarrows stabilize better during cross winds on long range targets (70, 80 100 yds) due to most of the weight being in 1 point, the front. Again, it has nothing to do with how well an arrow with smash through a bone. You can easily make an arrow with 10% FOC that weighs 550 gr or more. I'm not sure why people automatically assume that a person is shooting a fast light set-up if they have 10% FOC.

For some reason now people talk about a broadhead likes it's a rifle."I want to smash through bone." Broadheads use hemorrhaging to kill an animal, not shock like a bullet,and any arrow with enough force, no matter what the FOC, will break through a shoulder blade if struck in the right spot.

Having a high FOC with the weight forward hasa slight advantage because most of the weightis on the most solid part of the arrow that upon impact the force will not be misdirected by the flex of the arrow.

High FOC or 10% FOC there is no wrong answer. It's all a matter of what you want to shoot.