I own a Taipan Veteran Long in .22 with the following upgrades...1) power plenum 2) HUMA reg 3) stronger hammer spring. What is the max power that I can reasonably expect to see from this setup? My end goal is to fling 20.2 NSA slugs somewhere between 900-950 fps.(40-45 fpe) I'm just not sure if this gun is capable of it and I don't want to damage it trying. Any tips on shooting slugs with this setup are greatly appreciated.