Last year I had the opportunity to shoot one of these. It is a fun little gun and I can tell you from shooting it, that yes you can hit a target 100 yards away with no problem. You can even ring a steel gong at 500 yards with it, if you try. The 500 yard target would be much easier to hit if they had better optics than plain open sights.
FA has some other new products in the pipe line and I've been able to shoot a couple of those as well. This last fall I was given access to a standard 454 Casull to assist with a long rang shooting and hunting project. Basically it was a gun writers evaluation gun that they send out from time to time. Unfortunately I didn't manage to kill a deer with it so there was no forth coming article or pictures.
I am aware of a totally new gun that they have in development. I shot it last spring. It is designed as a long range hunting rig. I'm going to see if they will loan me one to compete with this spring. If they do, I'll post pictures.