With updated loading data, the 44 is back to being quite the beast, I have found that with equal bullet weights and close to equal velocity (I was running a Super Blackhawk and a 454 Casull), the 44 was exceeding the penetration of the 45 caliber bullet albeit with a slightly smaller wound channel. I was shooting a 320gr in the 44 and a 325gr in the 45. In wet newsprint (a poor medium I know)the 44 made 38" and the 454 made 36". My current Bisley 44 loves the Lee bullet and 300-MP powder. I look forward to your book, and your new pistols are functional works of art!