might be hard to justify, but you do need it

by bj , Wednesday, May 06, 2015, 20:09 (3493 days ago) @ Art

Any hard core shooter NEEDS one, or more.

I used to think that the advantages of the .44mag were the variety of very good gun models that it was available in, and the wide selection of factory ammunition that is available for it.
Yes you can load the Ruger .45Colt to equal or exceed it, so in that regards you could do without the .44mag. For that matter the .41mag is pretty close to the .44mag.
In reality if you handload the .45Colt could replace all of the guns you listed, but that doesn't mean you don't need any of the others.