All this is great informtion and I do respect your research but, I would have to say that messing with using these rams or springs you mention in a QB-57 -58 is treading dangerous ground. As it is now, the trigger system is almost to weak for the stock spring they use now. I would recommend staying away from any power mods on the QB's. One could lose a finger very easily on these models.
Scotchmo can you post some pics of the process it would help to see what your doing alot thanks.
Thank you Scotchmo , this is very cool. So what kind of fps does that give you on the qb57 ? is it 177 or 22 cal. That would be a cool rifle at 700 + fps in .22 cal.
Does anyone know if it is possible to convert a B25 or B28 to gas piston?Thanks for any helpful contribution.
What about a Beeman RS2? I would love one of these in a gas piston.