Nowt wrong with the Bullpup principle but a bit crap in air guns that are not semi auto due to the need to break position to reload.
However as a vehicle gun, they are excellent unless you get too animated and start swinging it around in the inside and muzzle sweep.
The basic principle allows for a longer or std barrel to be used in what would ordinarily be a carbine plus better ergonomics etc.
It is not without its difficulties though - particularly iro the trigger dept. and loading on a non mag variant air version.
Love them or loathe them, I would look at a bullpup for hft where single shot and positional shift after one shot would be ok so long as it had big enough lungs.
Hunting in single shot or with the cocking lever so close to your earole.....not worth it
In a battle of wits I refuse to engage with an unarmed person.
To one shot one kill, you need to seek the S. Kill only comes from Skill