shibumiseeker
Grandmaster
Yeah, I've been told that Doubletap is unscrupulous, and the obvious reason for them loading bullets lighter than listed on the box is to get the velocity numbers where they claim they are.
At least the other three seem to have unblemished reputations, especially Kevin Underwood's company, which loads what they claim and whose velocity numbers are right in line with what independent people (tnoutdoors9 on YouTube, for one) have verified with their own chronographs.
DT is the only one I know of to have issues.
My biggest issue was if I am paying a buck or more a round for self defense ammo then I want it to work as intended. Montana Gold HPs are not designed for the 10mm velocity like the Gold Dot and will not be as effective by a lot. Compounding that is ignoring a customer complaint about a serious matter like that indicates either a company that is criminally negligent, or one that deliberately lies to their customers. Either way I won't do business with them.