How hard to reload the 450 Bushmaster?

[WEATHERBY460]

I reload standard rifle calibers all the time, but never have done this type. How hard is it to reload this type? Any tips please advise. 2 questions to start:

Can I use once fired brass, and what dies should I use?

Thanks

 

[Carlos88]

No issues but you will to want crimp. FL dies and a taper crimp die. Lee factory crimp die works great.

 

[Wolf76]

Its more like loading a pistol cartridge. Lightly flair (bell) the mouth and I only put a light taper crimp on the cartridge. Nothing special. Trim length is important.