Originally Posted by DigitalDan
Generally speaking, brass shells use wads that are one size larger, ie. a 12 ga brass shell will use 11 ga wads. Charge is not a mystery. Shotshells are labeled with drams equivalent smokeless loads, so a 3-1/4 dram equivalent means the smokeless charge is equal to 3-1/4 drams of black powder, which is a mild load.

Brass shotshells use large pistol primers.

1 dram = 27.34375 grains.

https://www.shootingtimes.com/editorial/blackpowder-shotshell-loading/361504

https://goexpowder.com/wp-content/uploads/2018/06/breechloading-sg-shells.pdf

Using hot melt glue is interesting for sure!
I have been loading and hunting with black powder cartridge shotguns for quite some time, and tried danged near everything for sealing the OS wad, I settled on silicone sealant.
HOWEVER, my next batch, I am certainly going give the hot melt system a try, thanks for the tip!
Cat

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scopes are cool, but slings 'n' irons RULE!