Willied76 What a nice choice you have.
On the 2 - 7 1/2" you could shoot the 300gr swift in one and the Barnes 250gr in the other. Just a thought....

Now on the shorter barreled gun you could cut it back to the ERH length, and shoot a handload out of it. Stay with the 454 brass and use IMR-4227 with it, for the lighter loads,,,, and go to H110 with some hotter ones if you feel you need it. Barnes would still make a nice choice on the bullet.
Staying with the 454 brass you can also use a 335gr Cast bullet for practice or whatever.