It was tough, It had weight. It had enough lead in the brass to kill a rat.
You could replace the washer, ream out the brass and be good for another decade. It has been in service for 60 years.
It's lightweight. The lead content in the brass is virtually non-existent - and so is its ability to last very long. After 10 years, it's a tired pup.
Stay tuned technology is at work! First generation low/no lead brass is here now, tomorrow is a new day!