Take a look at the velocities of the the 75gr TAP SBR that I recorded in the embedded link in my above post - 2170 fps from a 10.5” barrel. That’s almost 300 fps slower that the 75 gr TAP T2.
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I use 55 grain Gold Dot out of my 10.3” as a primary load. It’s very accurate in my AR pistol and seems to have a good report on doing was it’s supposed to do. I also have ran my 77 OTM handloads that I use for my MK12/SPR for accuracy and function with good results. POI vs POA is very close to the same at 100 yards.