I recently received my Grandfather’s tube fed Winchester 77. The first time I took it out the range it had trouble cycling. Depending on the ammo it would either not eject, misfeed, or it wouldn’t cock the firing pin. I took it home cleaned it and that didn’t make a difference. After talking to my dad who passed it down to me I learned that it was picky about ammo and that before he gave it to me he had the “internals and feeding mechanism redone” by a friend of his that is a gunsmith. I went out and bought the ammo he recommended CCI Stingers and ammo recommended by the guy at the gun store CCI Velociter. The CCI Stingers had enough power to cycle but not cock or grab the lip of the round so I have to remove it by hand. The CCI Velociters cycle and eject but they don’t cock the hammer. According to the gun store owner the CCI Velociters are the hottest loaded 22LR on the market. I don’t know if the gunsmith put in new springs or not. Any recommendations?