First time posting on site. Really enjoy information from posts. I have an opportunity to buy a custom long range rifle in a 7mm mag. It was made by a deceased gunsmith in PA. It’s 30 years old or so. Never fired. It has a Mauser action, 26 in stainless heavy barrel and custom thumbhole stock. Has technology changed that much over the years? Would it be worth buying? If so what would be a good price? Thanks in advance for info!