10d nail 184 gr 879 fps 600 psi
192 701
180 658
166 664
182 714
Marble 156 854
162 614
160 766
158 634
164 642
Because of these figures I decided to open the pilot with a spring.
I believe that the 156 gr/854 fps an the 184 gr/879 fps are accurate weight and speed measurements.
The lower readings were probably caused by slower manual valve opening.
I put this together in a few hours today.
I made split hole wood clamps to hold the spring and the sear.
Note the ghetto wire hanger trigger.
It works surprisingly well for my first attempt at a trigger.
I am not going for max speed or efficiency, just reproducibility of opening the BV.
While thinking about the spring/trigger, I came up with a very different idea for a BV only gun.
Imagine opening a 3/4" BV in 0.003 seconds using 40-50 pounds of force.
No need for a piston valve, pilot valve, etc.
I have ordered the critical parts and I am eager to try it.
The gun will be: 3/4" copper barrel, sweat 3/4" BV, 3/4" short chamber, fill valve/quick connect.
The barrel will slip into the BV using the Trom-Boyn style design and swing bolt action.
we are going away tomorrow for about a week.
The parts should be delivered by the time we return.
The secret is what I will be using to power open the valve.
I will keep you guessing until I build it.
