I have some older super X. It is the most accurate out of all 22 ammo I have tried. Just picked up 3- 100 rd plastic boxes at Wally recently. Haven't tried it for accuracy yet.
Don't recall seeing winchesters in boxes like that. Remember shooting some super -x cases but then to excited to be shooting a rifle to care about the make of ammo. About 1977-79.
Super awesome pics, btw.
So, mid-70s you think?
The pics are the passenger seat of my Tacoma.
The rimfires I found the shiniest one in the midde is a .22 long rifle. Notice the next one to the right a little larger diameter and longer.
View attachment 47400
Going from right to left:
.22 BB cap or 6mm Flobert (interchangeable)
.22 Short
.22 Winchester Auto, special cartridge just for the 1903 Winchester semi auto rifle
.22 LR
.32 short RF
.38 short RF