Yes, you're maxed out at 33.3gr for sure I would say. 31.9gr is 50,000psi in a SAAMI chamber with a 123gr Hornady.
With 33.2gr, I got 2640fps from my 16" AR15 Grendel, but loaded to 2.275" COL and that was on a ladder, nothing I would ever mass produce for the AR15.
That is 56,848psi in my records. 33.5gr would be at least 58,439psi.
To get real numbers, you would need to pressure trace with the gauge over the center of the cartridge in the chamber, but you are at the upper end, depending on how that thing is throated.
With 33.2gr, I got 2640fps from my 16" AR15 Grendel, but loaded to 2.275" COL and that was on a ladder, nothing I would ever mass produce for the AR15.
That is 56,848psi in my records. 33.5gr would be at least 58,439psi.
To get real numbers, you would need to pressure trace with the gauge over the center of the cartridge in the chamber, but you are at the upper end, depending on how that thing is throated.
Comment