Why 40mm?
I’ve been digging into launchers for a while now before I jump in and buy one. With MILC cases for 37mm and 3d printed projectiles, it doesn’t seem like there’s that much performance difference for the sake of signaling/bangers between 37 and 40mm. And of course I’d rather not deal with the ATF at all if I can avoid it.
For those that have used the longer range smokeless options for 37mm and also ran 40mm, do you think 40mm is worth stepping in DD territory?