410- 303 shells

Use 444 remington brass, it is already to go without the fireforming needed.
The 303 british brass is to small a diameter in the main body of the case and will split releasing alot of nasty gases, don't ask me how I know :cool:

The 444 is the correct size from rim up, other then it being a bit shorter then your regular 2.5 inch 410 hull. As for data I will have to dig through the big drawer of things.
 
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