I just acquired a NIB, unfired, 3rd generation 416 Rigby to give to my son. I already have one. For a rifle that has been sitting for so long unfired are there any issues I should look out for before firing? It has a great piece of wood and I would hate to crack the stock. It might be best to have it bedded first although I have shot mine for many years with just the factory bedding with no issues.

Don't know which generation my rifle is but this was my experience. My stock cracked on the 2nd shot. Ruger replaced the stock and I had it bedded and a 2nd crossbolt added. Also had an issue with the ejector not perfectly aligned with the slot in the bolt. It would drop the fired case on top of the next round in the magazine when the bolt was cycled with vigor. Ruger also fixed that. Since then, nothing but joy.

loosen the bolts and retorque - then let is sit over night, and do it again.

unless you are going to go in and bed the whole thing and put a bolt down the grip axis, which i highly recommend.