Was shooting some six-year-old Remington Cyclone yesterday and had some very light loads, including a squib.
https://www.youtube.com/watch?v=liokXBEoX_I
Pulled the bullet from a round, chambered the charged case, and fired the squib out, then carried on shooting.
Thought I had one a little earlier as well, but I realised I'd heard the bullet hit the dirt somewhere ahead of me.
Cyclones are supposed to be 1240fps I think, but some of these were definitely subsonic.
They have very loose bullets so I guess some have been attacked by the elements.