Scott, it's a 38500 heavy duty gun, and it's rated at 800 psi. The pump I use is rated for 5.5 gpm, 60 psi.
I attach it to a 50' chem hose. It lets me wade out and extend the reach if needed.
How far will that gun spray. Not talking the reach of the hose but the gun itself? I've got a broadcast spot sprayer from tractor supply and with a light breeze I'm in the 10-15' range and closer to 10 but even under good conditions I might get 20 feet. I've seen some advertise 35' horizontal, I realize that's under perfect conditions but if I can consistently get low to mid 20s that's a big difference for me.