Use of hammer and firing pin instead of striker system
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Someone in our club has a Patro, it rarely works and has to be retuned with every change of ammoscerir wrote:Roberto Palamà made (late '70s) beautiful competition pistols, under the name of "Patro", with a different percussion system (no hammer). They were very good and the trigger was impeccable and smooth (the trigger-stop had a spring, inside), and the barrel was very short indeed.
http://www.robertopalama.com/immagini/P ... tro_M2.jpg
He also tried different mechanisms, designed for rapid fire competition, also with hammer, as far as I remember, to get a faster percussion.
http://www.robertopalama.com/immagini/P ... tro_M3.jpg
Palamà is still working, as a gunsmith. Many say he is the best gunsmith in Italy. I would write an email, about these malfunctions, roberto@robertopalama.comJamesH wrote: Someone in our club has a Patro, it rarely works and has to be retuned with every change of ammo
Back in the mid 80's Morini had the model 102 which was a electronic triggered sport .22, it used a striker/spring in the slide released by a solenoid from below.
The biggest problem with this pistol was the balance of slide springs vs. striker spring.
With the striker compressed the rear of the spring pushes against the back of the slide, once released the striker flies forward to fire the shot but the spring reaction pushes the slide backwards, sometimes far enough to slightly open the slide and cause a light strike or malfunction.
The fix was to either increase the slide spring tension which could also cause a feed malfunction, or increase the mass of the slide which affected the pistol handling.
When working well it was a pleasure to shoot, but very hard to keep the balance happy and the pistol is now part of history.
The biggest problem with this pistol was the balance of slide springs vs. striker spring.
With the striker compressed the rear of the spring pushes against the back of the slide, once released the striker flies forward to fire the shot but the spring reaction pushes the slide backwards, sometimes far enough to slightly open the slide and cause a light strike or malfunction.
The fix was to either increase the slide spring tension which could also cause a feed malfunction, or increase the mass of the slide which affected the pistol handling.
When working well it was a pleasure to shoot, but very hard to keep the balance happy and the pistol is now part of history.