25mm shotgun

>>34210492
Pretty sure ATF would consider it a destructive device because it is bigger than the average government employees penis

>>34210680
Even if its just shooting lead shot out of a smoothbore?

>>34210762
If you build it as a hunting gun you're probably gucci, but you would definitely want to ask first.

>>34210492
Might as well try it. Those cases won't like large amounts of powder meant for tiny rounds tho, they have rice sized granules of much more viokently exploding propellant in them, rifle powder may not have that effect

Also non rimmed

>>34210803
Allright thanks im probably just going to do it as a project to see if its possible.

>>34210823
Whats a way to source powder like that also will it matter if its nonrimmed?

>>34210823
case volume=/=high pressure
high case volume+small bore=high pressure
steep case shoulder+large case volume+small bore= kaboom and/or sub 1000 rnd barrel life (with rifles)

Also i forgot to mention i am basing the gun of a standard single shot breakdown shotgun

>>34210909
>>34210823
>>34210883
to add: large surface area of propellant=faster burn=higher achievable pressures (generally) the opposite is also correct.
high pressure rounds usually have belted cases to help support the web during firing. rimmed, semi-rimmed, and rimless does not determine propellant type, pressure, or strength of the case; it does determine the calibers intended function.

>>34210492
I love this board