I feel for you. I use these loads in Win 94 and it is a big kick, pun intended. I never owned a lever action and I stumbled into the Beartooth website. After reading all about the 444 there I got one and 6 lever guns later I would call myself a lever gun nut. A loud mouth at the range thought he was making fun of me and my 30/30. It was the 444 and the first time out with full loads of the 325gr. He never noticed the size of the shell I was feeding. I had the last laugh when I let him shoot it.
Let me know how that works in your Handi. I had one in 204 ruger and could never get it to shoot well and traded it in but have been thinking about getting an other one in a bigger round.
=FLASH=