Raimey,
Slug the bore, grooves will likely be either .227" or .228". This will be somewhat of a problem, if you use bullets made for 2,800 fps 22 Savage HP, limit velocity to 3,000 fps. Do not use slow powder for the lower velocity loads. Cases will also be problematic. With your connections, see if you can find some 6.5x62R or the more available 6.5x65R cases. Failing that, 7x65R will work, but forming them will likely lead to pretty high losses. If you use 7x65R and run low, I can help out. The friend that "bumped up" heavy .224" bullets to .228" does not do this for the public, so I can't give it out. If he sees this and reaches out to you, great. BillK is right, it is a really nice gun.
Good luck,
Mike