Looks like an oob kaboom. Either bad rounds, slam fire, hammer follow, or lead buildup caused that.
i think its the ammo.
last time i was at the range i bought 100 rounds of federal and 100 rounds of cci standard velocity. i had 18 rounds of federal that were stove pipes i had no problems with the cci. i was using two different .22 hand guns. both guns had issues with the federal.
it was good you were wearing your safety glasses