I am looking for info on swaging jacketed bullets.

What I had in mind was a 350 grain northfork flatpoint .458
to take to .454 for my .454 casull taurus raging bull.

If a 360 grain cor-bon penetrator will go 1500 fps I figured a 350 northfork should do the same.

Maybe, maybe not. Swaging from .458 to .452 may increase your bearing surface to the point you can't get the velocity without extremely high pressures. But then, that's why we experiment.

You want to look for a company by the name of Corbin. I know they use to advertise in the back of Reloader magazine and may still. That's the only one I know of, but they should be able to fix you up.

Although not quite as heavy, Freedom Arms markets a tough 300 grain JSP for their revolvers. I have used their 260 JSP and got several feet of penetration on a gemsbok after breaking its right rear leg. You may want to give it a try if you haven't already.

Wow that is some site : http://www.corbins.com/

Now I want to make all my own bullets.

Have you thought about just makeing your own hard cast bullets? I get very good accuracy in my Raging Bull with bullets cast from a mold by www.mountainmolds.com . If Elephant and Cape Buff can be taken with cast bullets from a .475, then they should work in a 454 also.

My idea is to have a heavy hard bullet for moose and grizzly bear hunting.

I want penetration and expansion. Not a pencil through wound channel.

It must stay together when heavy bone is hit.

Maybe a 350 grain hawk bullet with .35 jacket,

300 grain partition or
325 swift A frame

I guess a 350 grain hardcast WFN would give the penetration.