If you want to invest in guns as a business investment, do not buy guns you like!! You need to be coldly rational in your buying and selling decisions if it is a business investment. Also look at the demographics. Fine doubles were the guns of the 50's and 60's. People who wanted them when they were young are now old and their estates or widows are selling them, not buying them. They were sought after by hunters and few in the younger generations have the opportunity to hunt without substantial effort and expense.