Good Evening Everybody!!!!
And to my friends in the southern hemisphere, Good Morning!
As a proud new owner of a Pardini Mechanical Bullseye Model, I have been playing with the weights and springs and would like your assistance.
Through an exhaustive testing regimen, I have deduced the following without question:
1) The pistol will get appreciably lighter when you remove the weights from the nose of the pistol.
2) Conversely, it will get heavier as you install more weights or switch to the heavier tungsten weights.
What I do not know is should the springs go on the nose end of the weights or should they go on the tail end? I have heard arguments that either side will reduce recoil but am unable to determine a difference when I switch them around.
Currently, I have four steel weights and two tungsten weights in the nose of my pardini. The springs are on the nose end of the pistol, simply because that is the way it came from the factory.
So, how do you configure the weights and spings in your pardini, and what is the reasoning behind it?
Appreciate it!
Cranky
Pardini Weights and Springs.
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crankythunder
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NDbullseye
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I have a SPBE as well and my setup is the following: all steel weights installed, the top two on each side with the springs against the retaining plate, and the bottom one on each side with the spring behind the weight so the weight is against the retaining plate. I did this in trial and error. I switched the bottom springs around and found that this reduced muzzle flip and noticed recoil. I am shooting this gun iron sights.
Springs at muzzle end of pistol - ie put the weights in first then the springs and then screw the cap on.
Reason: At the instant of ignition, recoil starts (pistol moves rearward as bullet moves forward) and weights remain stationary for an infintesimally short time while springs start to compress, absorbing energy and reducing pistol's rearward energy. Weights then accelerate rearward at a slower rate than the pistol until springs are as compressed as they will be. Then springs release the absorbed energy and send weights rearward as rearward recoil motion of the pistol finishes and bullet has left the barrel.
If the springs go in first, the weights will recoil with the pistol with no reduction in pistol recoil. Try it both ways. The difference is noticeable.
Reason: At the instant of ignition, recoil starts (pistol moves rearward as bullet moves forward) and weights remain stationary for an infintesimally short time while springs start to compress, absorbing energy and reducing pistol's rearward energy. Weights then accelerate rearward at a slower rate than the pistol until springs are as compressed as they will be. Then springs release the absorbed energy and send weights rearward as rearward recoil motion of the pistol finishes and bullet has left the barrel.
If the springs go in first, the weights will recoil with the pistol with no reduction in pistol recoil. Try it both ways. The difference is noticeable.