Instead of, as with a well-balanced double rifle, the muzzle flying up at the first shot and dropping down into place for the second shot, there was no possibility of alignment without a fresh aim for each shot.
It was just as if you have a strong unruly child in your arms trying to set him down on a chair.
He wriggles from side to side, stiffens his back, and you cannot seat him on the chair.
This is just how the rifle acted. It wriggled and struggled and refused to let itself be aligned on the target.
The inventor also tried shooting it and missed even with his first shot. The fault lay in the way the recoil was taken up.
To make an automatic rifle which will shoot accurately in rapid shooting, the recoil must be straight back, not with a twist and wriggle from side to side.
When choosing an automatic pistol, shoot it and find out if it lets you align your sights afresh immediately after you have fired. If you find it cants over or tries to go home into its holster at each shot, and you have to alter this cant before you can fire again, do not buy it.
Get the gunmaker to instruct you thoroughly in the mechanism of any automatic you buy and especially what parts need special attention to prevent its jamming.
Jamming is the constant bugbear to fight against. The automatic pistol must always be kept in perfect working order and the parts properly cleaned and oiled.
The barrel in some is difficult to properly clean internally, unless taken apart, and it is difficult to re-assemble.