On another thread there were some concerns about if the RTI is a good hunting rig....
And a few other concerns about sturdiness....
And big power....
So, instead of derrailing that thread, here goes:
■ RTI Prophet II ■

Instead of the Impact's
30 o-rings, the RTI has
7* (seven) o-rings.
*[Correction: 6, and for performance version: 15

]
And a very sturdy shroud/barrel.

The OEM magazines are nice for left-handed shooters.
And the CARM magazines don't flip left/right.

You want BIG power — but a sturdy gun:
.177cal = 22—
37FPE
.22cal = 35—
65FPE
.25cal = 44—
77FPE
.30cal = 48—
100FPE
Plenum 70cc
HardAir Magazine just did a write-up, and they have more power graphs (power—regulator setting correlations):
Thanks to the manufacturer, HAM can now exclusively share some more information on the new RTI Prophet II air rifle that we revealed recently
hardairmagazine.com
Externally adjustable regulator 80-180 bar (1150-2600psi)

Externally adjustable hammer spring
Barrels
.177cal: 510mm=20", 1:17.7 twist, choked
.22cal: 600mm=24", 1:16 twist, light choke to accomodate both slugs and pellets,
proprietary RTI barrel .25cal: 600mm=24", 1:16 twist, light choke to accomodate both slugs and pellets,
proprietary RTI barrel .30cal: 600mm=24", 1:16" twist, choked

Caliber change kits available

Arrow barrel available (Arrows X7 2212)
This is a dream gun!
Matthias