Chuck - get yourself into the Beartooth Bullets Website - those folks have conducted more research on the use of cast boolets in the 444 than anyone else - their work is incredible and I use their reloading data all the time. They list their load data by bullet weight and you will see some very, very interesting results with their cast boolets, and from a Marlin just like yours.
Some of the other fellas shoot the Winchester Timber Carbine with those loads and the accuracy they get is phenomenal. My winchesters love their reloads.
BTW, you will find a lot of 444 shooters either here or on the Lever Action forum. HTH. Mikey.
