I think it was #9 that I use. For the .357 I used 5 gr of Blue Dot behind the shot capsule and it's worked well...it's all I've tried in .357. All of the cotton mouths have required 2 shots to completely kill them. Copperheads have only needed 1. Haven't had to use it on a rattler yet. They work great on rats as well.

Have used the same #9 and 5 gr of Blue Dot in 10mm cases with a thin cardboard seal on top of powder and on top of the shot (thin bit of glue on top of last one). It has worked well in a 10mm revolver, but may come loose if you fire 10mm rounds with it in a different cylinder. Would guess the same could happen with .357 (maybe max?) brass sealed the same way.

Don't have any pics of the .357 shot capsule loads, but here are a few of the home-grown 10mm shot shells:

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