A .410 is just slightly larger. The brass will go in about half way. Are the 44.40 and 44 everlasting the same size? He took it in trade about 25 years ago in exchange for doing some bodywork on a car. It was traded to him as a 45/410 but he didn't think about it until this week when I decided to clean it when I was cleaning my weapons (it's been at my house for years). Photo attachment here:
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