Dunno, I've got three six inch pistols in 40 S&W, one weighs 36 ounces, one weighs 42 ounces, and one weighs 49 ounces. My most used blaster is the 36 ounce one. I shoot 180's, 200's, and 220's in 'em all at major PF and the lightest pistol feels the best with any bullet weight.