Originally Posted by Nick G
sorry to go of topic, what sort of power is the 97 making Mat, I have built a 23mm tx and I am experiencing a bit of bother, making the power, I have it at 10.75 with 7.9gr at the moment, I am also not convinced on the firing cycle, the sight picture moves more on it than my 25mm ally jobs.
he has it set to 10.5fpe, hardly any movement. It will go higher if he needs. Matt actually does not run the 303 tophat, i sent an ertalyte one which he added washers to so he could drop the piston weight even further...i seem to remember 170g or so....(he will confirm no doubt)