Originally Posted by
bighit
If i remember right ,pre loading will not do much .
From another forum
The NP has it's full pressure from the moment you start cocking it, versus a spring which is more "progressive" build up to full pressure. The same thing happens, in reverse, when fired. While the spring may only have a percentage of it's max. force left during the end of it's stroke, the NP will still be exerting full value throughout it's stroke. Adding spacers won't gain, with the NP powerplant, and as posted above, slamming the piston into the breech will destroy your piston seal, and I'll bet it'll be a violent shooting cycle. Good Question!
NP = Nitro piston
Agree that a gas ram will have in effect a degree of pre-load already since even when fully extended there is pressure in there, but as the ram is compressed it must follow that the internal pressure, and hence the "spring" force" will rise further. So Pre-load will increase the stored energy, but it is far from clear if that will be beneficial or detrimental.
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