Not my video, just an idea. Who needs 1,000 shot shells and how do you crimp cardboard?
Shot capsules are $10 for 50 and are a PITA when they crack.
I shoot several hundred each spring at carpenter bees. I don't crimp my loads. Not necessary. My wads are over size and I seal with a little glue or finger nail polish.
BTW For years I used a .22 and "ratshot" till it got too expensive for the amount I was shooting.