Is this from a 22" barrel? I start my reloading foray this weekend with my 72 vintage Marlin 444s and i have H4198 as well as the 265 grain Hornady interlock at my disposal. I am hoping my rifle likes these components......Start with H-4198 powder, say about 42.0gr. charge pushing a Hornady 265gr. Inter-lock at 2110fps, I get 5 shots all touching at 100 yards.
There seems to be so me debate on its effectiveness on large game but the Hornady 300gr XTP had been the most accurate .444 bullet I've used in both .444 Marlin I've had (still have one).I ordered some of bear claws bullets. Now if I can just find some brass. I'll need to call Bear Claws and double my order when I get back from my fishing trip. Just as well have some extra on hand. Bass Pro did have some 300 gr. XTP's for 14.99 for a box of 50, so I bought all they had.
I'll try this if and when I can find any Speer bullets. I did have a local shop finally get my powder in. Three pounds of 4198.