"*** FWIW, DT isn't the only manufacturer to have these types of complaints, I've heard similar reports about Buffalo Bore and Black Hills (namely switching to Montana Gold, Speer Uni-Cor, or Hornady XTP bullets rather than Speer Gold Dots)."
Agree with this.
And the public complaints are not just about the so-called "Boutique" ammo companies. (BHs by the way, also a small-time family company, supplies our military with its 77gn Mk 262 MOD 1 5.56mm ammo).
Since before the election last year, the increasing demand for pistol & rifle ammo and components has not only driven up the general retail price, but it's also resulted in a step-up in QC issues from
ALL the U.S. ammo-makers.
A good example is seeing the recurring comments of AR-guru Pat Rogers in his SWAT magazine pieces about the duds and misfires in his training courses among factory .223/5.56mm ammo from the "reputable" Big Three.
As far as Double Tap's advertised boxflap velocities for its pistol ammo, McNett generally chronographs these loads from stock Glock pistols at high elevation in Utah. Factoring for all the variables like elevation, temperature, humidity, type of pistol used, etc., you'll find posts from DT users across the U.S. reporting both lower
and higher velocities - and, as often as not, velocity readings that are spot-on.
So, IMO, this issue's a wash.
As for comparative prices, I think Buffalo Bore makes great ammo, and I really like their 10mm 180gn load. That said, for what you pay for 20-rds/box from BB, you'll do better getting 50-rds/box from DT.