I’ve done The exact same test, and agree Velocity slightly more punchy, but not a lot in it to be fair. I think it’s more that the recoil pattern is different, which can be interpreted as more punchy. When I first started to shoot FBlacks, first impression was there isn’t much difference between them and the SF, but after some time you realise that they’re are different, but it’s all very subtle in my opinion, also depends on the gun, and let’s not forget the psychological aspect as well. No real bad cartridges out there (within reason of course) buy one that suits the pocket and forget about the rises, they’re here to stay.