The 38, with its larger slide, weighs exactly 3 ounces more than a 23, but I wondered what the loaded-weight difference might be. My 38's magz are equipped with Pearce +1 extenders, and I load them full with 9 cartridges. The 23's mags have Pearce extenders but just the more-finger-space type, and I load them with 12, not 13 cartridges. With the .45 G.A.P. loaded with 185s and the .40s loaded with 155s, the guns including 2 magz and ammo are only 2 ounces different, the 38 being heavier. Ammo is loaded with 185g. Speer GoldDots.