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According to the latest American Rifleman mag (August, 2019), SIG Sauer's 147 gr FMJ achieves a PF of 158 in a 4.6" barrel. (Page 69). That is Very Close to 9mm Major - a 147 gr bullet at an average of 1076 FPS. Of the three loads tested, the Aquila 115 gr FMJ hit PF 145 and Double Tap's Lead Free 77 gr HP hit only PF 119. I'm really surprised that factory 9mm ammo is available readily with such a high PF. For those of you who are concerned about reloading the 9mm to Major loads, this should make you feel a little better - these cartridges are not labelled as being solely for very heavy pistols designed for +P+ loads - The other thing that caught my eye is that the heavier the bullet, the More PF. The 147 gr = PF158; the 115 gr = PF 145; and the 77 gr - PF 119. Might be why 9mm and .40 shooters have long claimed the perception of "less recoil" for heavier bullets, e.g. 147 gr 9mm and 180 gr .40 caliber.