My in-laws came to the ranch for Ressurection Day and my father-in-law brought his cherry 1886 Winchester .40-65 and a box of reloaded ammo that he purchased mail order in 1940. He'd never shot this ammo and gave me the opportunity but the cartridges would not enter the loading gate nor the breech. It appears they are .45-70 cases that were not properly sized down. Any one have experience with this caliber and sources for bullets and cases? Also, any idea what this rifle would be worth? It is is excellent condition..