I suppose that article proves the Target new model 3 can shoot 1 1/4" groups from a " Machine Rest" at 50 yards. To be fair, a machine rest is not unlike mounting the frame to a solid mounted Bench Vice to completely eliminate recoil and drift. It also removes human error.
Photo 1 is a typical bench rest.
Photo 2 & 3 are Machine rests.
I think that there are a lot of long barrel antique revolvers that would Also shoot extremely well from a machine rest at 50 yards.
Even a 6 inch barrel 38 Smith & Wesson top break of any model would shoot extremely well at 50 yards when mounted in a vice!
At least this article possibly proves what "the gun" is capable of with the original black powder loads.
Now all we have to do is locate a human being that can mimic a Cement statue with a hand grip like a Mechanical vice, eyes of an eagle , and bone structure like a gorilla and we have found our target master! LOL.
Murph
Back then I think, and since, 50 Yard Bullseye Shooting, one is not actually rigid or tense or machine like, one has to be relaxed and merely steady and breathing naturally...and steady is not like Iron, it is actually kind of rubbery.
One fires as the Sight Picture is moving on to, or is in process of approaching what one wants...as it is impossible to be entirely "locked on" even if one wanted to...the Sight Picture of the Hand Gun is wavering and bobbing with one's Heartbeat, and respiration...any lateeral Breeze also moves one's Arm a tiny bit, etc.
This may not sound like what we would expect, but all this modern day 'animatronic-esque' super locked in rigid "Combat Shooting" stance stuff with Hand Guns, no one shot that way back when...nor have I ever shot that way.
The times I was doing 50 Yard, one Hand, old time, Service Revolver or Commercial Automatic Shooting, I was relaxed and 'rubbery' and minded my natural Breathing ( never holding my Breath ) and minding my slow, relaxed Heartbeat, so that the lull moment of these may co-incide with the Sight Picture bobbing or weaving on "to", where I wanted my Shot to go.
Done right, it works very well.
I can not really imagine any other way.