with a U.S. spec gas ram the NP will only shoot 14.3's at 748-750 fps.Plenty of power to go pesting.Good Luck,Petey.
If you would like to keep the 495fps stamped, then stick with the gun, so much al ready invested.The library is chalk full of tuning info, tune it, make some barrel shims or buy the ones from scopes and ammo ( only cause gene's are us only). This way it will be a slick machine, also get the GRT111 trigger blade, great upgrade.From the big box stores you will not get any of the higher end models, they will be online orders only.
Robert,Thank you!I've been scratchin my head all day trying to figure out where I can get some shim stock in this two horse town...... my brain is fading. Happy shootin to all!Petey