What cartridge would make the most out of a longer barrel in the case of a PCC? I've seen charts before for rifle&intermediate cartridge muzzle velocity with a decreasing muzzle length, so surely something exists for pistol cartridges. I'm thinking something like .40 or 10mm would make the most sense. I feel like the typical reasons for using 9mm don't apply in the case of a PCC, namely felt recoil and mag capacity.

I mostly want to know this since at some point I'd like to build a PDW for home defense, basically an AR pistol w/ a brace. Using an intermediate cartridge indoors, in the dark, and with a shortened barrel seems like an awful idea though.

This isn't meant to be a "caliber war" question (I CC 9mm, so nothing against the cartridge), I just want to know which common pistol cartridges make better use of a longer barrel than others.

>>680227

I meant that the flash is going to be aids and the noise is going to give you cancer. Plus out of a short enough barrel, .223 isn't going to be any better than 9mm in terms of energy.

>tumbling meme

.223 is not magic and will NOT tumble at low speeds, further destroying its potency through a short barrel.

>>680222

Looking at the link given by >>680224, it looks like you're right about 10mm versus .40. It's incredibly dependent on the brand and manufacturer. The results from the buffalo bore ammo (which is kind of expensive but could just use that for defense) look particularly impressive. I'll check out that thread.

>>680224

Good link, thank you.