Semi auto barrel/ loader ideas
I'd probably suggest a simple blow-forward bolt, as it's fairly reliable and works well for spherical ammunition like that, although it does increase the dead-space between the valve and projectile.
Blow-back loaders tend to need more fine-tuning, and a pneumatically operated bolt would be rather overkill for a small bore like that.
Blow-back loaders tend to need more fine-tuning, and a pneumatically operated bolt would be rather overkill for a small bore like that.
Does that thing kinda look like a big cat to you?