Finally got to the range yesterday to fire my 77/22 17 MK2. Had some older lots of Hornady ,CCI,Remington,Eley and New Hornady.
Decided to start with the CCI 1st on the 7th round care erupted at the rim blowing gasses/powder bac into my face destroying the magazine and lodging the bullet in the Barrel.
This is the 1st time in 60 + years of rimfire shooting Hope it is the LAST
Waiting till Monday to get in touch with CCI