You should ping the Palo Alto Rod and Gun Club, I'm sure someone has one. Or contact David Gee at Chabot, I shot a few matches there last year, and there was a variety of equipment.
Will LP5 upgraded to PCP do? The only difference between this pistol and LP50 is the older barrel shroud style.
I live in SF Valey (LA area). You welcome to stop by and try any of (many) airguns i have.