G'Day Fella's,

I have a near new and uncommon stainless synthetic Ruger M77 MkII factory rifle, in .350 Rem Mag that I can't seem to shift!

As my brain seems to do on a regular basis, I was wondering about possibilities and in the case of this rifle, I was thinking of rebarreling it to .450 Marlin?
The belted .450 Marlin case, has a case head which is the same as a H&H Mag, so I was looking to do a straight rebarrel job on it, just to make this rifle useful to me.

Have any of you blokes had any experience with this cartridge, in a Bolt Action rifle?
My main concern, is about feeding of the cartridge from the mag.

Looking forward to your thoughts/experience.

Doh!
Homer