I know this is not the rimfire forum, but I've had that 452 FS for a year and I really would not let that go. I also have a 452 American in .22 WMR and have been disappointed with the accuracy of it, but the bedding on the mag American is a poor design in my view. I am going to pillar bed the rear and epoxy bed the front of the receiver and see if it does better. If not, I don't know where it will wind up; too bad because it is a beautiful rifle.
Back on topic, I am trying to figure out a way to get one of those 550 FS rifles, but a little thing called money is holding me back. I'll have to sell some stuff to be able to afford it.
EJ