RAfiringline said:The problem is, I don't know of any other source of competent systematic testing that compares to what this guy has been doing that addresses ~4" barrels.
So, with the available info, I think Critical Defense tested as an effective SD ammo that minimizes the risk to innocent bystanders due to overpenetration.
I would have no problem using Critical Defense in my Glock 19, but this video was one of the sources that pushed me towards the Win Train&Defend. With the heavy 147s, performance difference from 3" vs 4" barrels is not as great as lighter bullets.