Hornady's load manual lists load data for the 265gr under their 44 mag section as well as their 300gr.All Hornady bullets for the 44 mag are .430 diameter according to their book both lead and jacketed.
I don't suppose the Hornady manual gives any Vihtavuori powder charges for that bullet, does it?
If so, would you mind posting them?
As usual, finding an appropriate charge is proving hard to find!!
When the right to effective self-defence is denied, that right to self-defence which remains is essentially symbolic.
Freedom: Please enjoy responsibly.
Any idea that relies on murder for its survival in intrinsically weak.