Air PNB wrote:
Hello all new to the forum, but not to air guns although I've never opened many up to upgrade them, just finished plugging the small bleeder hole...made a huge difference in accuracy and up'd the power by depth of penetration into half inch plywood...thanks to you folks. I of course also purchased the p. auto rem.hunter express, first nitro piston air rifle, I also rebuild nitrogen charged shocks the rebuildable kind that you find on snowmobiles, bikes, quads, sxs etc.. so I have nitrogen tank gauges and all the bits and pieces to facilitate shock rebuilding. So my question is has anyone heard of modifying the nitrogen cartridge itself, increasing the nitrogen charge in it, I have done similar to "non rebuildable shocks" by adding a small self sealing port to allow for discharging and recharging the nitrogen. The though is increase the speed and ftlbs of the piston which in turn should affect the end speed/power?
Thanks
Hi and welcome Air PNB, my first question would be: Do you have your PAL? Modifying your rifle this way will make it shoot over 500 fps, giving it the same legal status as a ''real'' firearm. And you know what ''they'' say: No one can ignore the law.
As for adjustable gas rams, they're available on the net, just do a google search it's easy. But putting an even stronger one in your rifle may not give higher power, and could also give you a very harsh firing cycle, hold sensitivity and less accuracy. It'll also be harder on scopes, and induce premature wear in your rifle. Main concern here is the volume of the compression chamber, this is what mainly determine the potential power of your airgun. When you reach 16-18 ft/lbs of energy with the B19 platform, it's about maxed out.
Here's a link to an energy (and other stuff) calculator:
https://www.pyramydair.com/airgun-resou ... Units&u=14