The Engineer
AH veteran
In my original reply I neglected to mention that my Heym 416 Rigby has a MUCH larger diameter bolt and wider magazine than my Dakota rifles. There is also less diametrical clearance on the Heym bolt vs. the Dakota. This helps explain why the Heym action cycles so smoothly with this large cartridge.
I had a CZ 416 Rigby for a while. I would put the fit and finish in the class of a current model 70 or 700. Nothing wrong with that but as you try to "slick up" a mass production action you almost always remove some metal which make the action slicker but looser than it was. I have even seen bolt faces chrome plated to tighten up the headspace. Some fine custom rifles are made from these actions but my experience is they will never be a slick operating as an action that was originally manufacture to tighter tolerance.
I had a CZ 416 Rigby for a while. I would put the fit and finish in the class of a current model 70 or 700. Nothing wrong with that but as you try to "slick up" a mass production action you almost always remove some metal which make the action slicker but looser than it was. I have even seen bolt faces chrome plated to tighten up the headspace. Some fine custom rifles are made from these actions but my experience is they will never be a slick operating as an action that was originally manufacture to tighter tolerance.