I went down this road this spring and did a bunch of destructive testing. Not a collection of "once upon a time I saw my buddy's arrow do this..." but direct head to head testing.
To summarize it, the only 100% frontal impact proof component system I tested was the Valkyrie system. Some got ever so slightly tweaked, but none came anywhere near failure.
The only frontal impact proof arrow shaft I tested was the Zelor (now Day Six) shaft with the Valkyrie component system. The new Day Six components seem to check all the right boxes if the center pin is long enough. Haven't seen it in person yet so I can't say for sure.
Grizzly Stiks (even 170 spines) failed on the second shot, as a result of the weak inner part of their insert. The short inner section, combined with the fact that it's aluminum and drilled/tapped all the way through, resulted in failures after 1 hit; they all survived the first hit.
GoldTip's micro diameter component system looks stout, but it's entirely inadequate. You can bend the stupid inner pins with your fingers, and the outer sleeves are literally paper thin at the end.
No hidden insert types survived a single shot. The lack of footing really sets them back. They might be ok footed if you want to screw with that.
The 8-32 connection system is totally outdated and really sets a lot of great broadhead designs back. If you are dead set on shooting an 8-32 type head, the system needs a few things or something will fail. 1. The right arrow shaft. Aluminum, BTW, doesn't make them impact proof or even resistant vs carbon. It's weak, fatigues like crazy, and is far to thin to be adding any strength vs straight carbon. 2. Footing, or sleeved outsert. Should go back at least 1/4" over the shaft. Farther is better. Abowyer and VPA make footers, or you can make them yourself. 3. Center pin/support. It should extend farther into the arrow than the footing.
The only shaft/connection systems I tested that passed at all were the Grizzly Stik (survived 1 shot), Zelor w/ their outsert (always survived, but the outserts are hard to keep spinning true) and Zelors with the Valkyrie system. The differences in carbon fiber are huge! They definitely aren't all the same. The new Day Six stuff looks to solve the alignment problem of the Zelor outsert design while keeping the durable shaft composition. I'm planning to bag my X-impacts and go to those.
As far as the FOC/impact resistance goes, I was sure it was true. I tested 5 different .166 arrow shafts, all with a 20gr Al Valkyrie sleeve and 250 grain field point. The VAP, VAP TKO, and Gold Tip all snapped behind the center pin. The Carbon Injection splintered just behind the center pin. The Zelor never broke. The theory behind it is sound, but from my experience current carbon fiber shaft technology can't uphold it. The greater toughness of the Zelor shaft allowed it to absorb the impact without fracturing, even though it had more of its own mass to stop.