Regardless of when that test was done, the velocites of the Remington 158gr LSWCHP (+P) load are typical of what was attained in that test. Those same velocities have also been attained from others as well it's no secret how that load performs from a 4" tube.
Lets not get sarcastic here, obviously it is not going to say on the box that it is a bad batch. However from the velocities that you attained it clearly shows that that specific box of ammunition wasn't within the specs for that load. BTW not long ago there was some QC issues with this ammo. Some folks were finding this ammo had the bullets seated out to long, thus giving the cartridge a longer O.A.L, which prohibited some from chambering it in their revolvers.
Last edited by 336A; July 1, 2013 at 05:39 PM.