@RT44nut,
Welcome to the forum.
The only topic not worthy here is the one not asked about. Your question and the answers will probably help many here who for some reason don't ask.
I load .38 Special shotshells all the time. I put a light roll crimp on them all with no ill effects. Do a little experimentation to find out the limits before you crack the plastic capsule. You can then take those shells and put a light crimp on them to make sure you don't get bullet pull again. I have a feeling the very light J frame you are using had a part in the problem. I know because I shoot a M442 which is just as light.
If you are considering crimping the factory ammo I guess you are set up to reload. Why not load your own shells? You can then use brass cases and use any shot size you want. I use #12 shot in the ones I load. Of course #12 shot is not easy to find and who want to but a whole bag when you only need a little for that ammo. I bought a box of a very cheap brand of 12ga shells and opened them up to harvest the shot. The yield will allow you to load A LOT of .38 snake shot.
Speer Empty Shot Capsules 38 Special Box of 50 (unfortunately on backorder right now)
Good luck on fixing the shells and again, welcome to the forum.