I would love to see them get the energy up around 28-30 fpe for the B28 25 caliber. I know that is Theoben Eliminator,Webley Patriot territory and I do not think the air chamber of the RWS350/B28 is quite as large as the before mentioned pair. Maybe I'm just being quirky but I already have a air rifle putting out 24 fpe with certain pellets, albeit smaller in grains, and I would feel like I am just duplicating performance in fpe and the rainbow trajectory of a 22 fpe .25 caliber might discourage me. Still, $230.00 for a 25 caliber B28 looks tempting compared to $500.00+ for a Webley Patriot in excellent shape to say nothing of the $1,000.00+ price tag of the Theoben.