Going from 125s to 100s will require you to retune your bow. There’s not much difference in 125s and 100s otherwise. 100s are slightly more available than 125s. Some 125s are slightly more robust than the 100 grain versions of the same head. 25 grains one way or the other isn’t going to have any appreciable difference in penetration. QAD Exodus and the smaller grim reaper mechs are hard to beat.
Here’s the honest truth about 4 fletch, they’re pushed by people who need to sell more vanes. Anytime you can sell 33% more units to your existing customer, you’re going to sing its praises.
3 high profile vanes (blazer, Q2i raptx, tac summit, aae hunter, etc) steer broadheads better than 4 longer low profile (aae max stealth, bohning heat, tac driver, silent knight, etc). Go test it out yourself, take a bow that’s not tuned and see which one keeps broadheads with field tips at further distances. Higher profile vanes have more leverage than low profile vanes, that’s why they work better.
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