Quote Originally Posted by dougbunney View Post
Not really looking to modify it- just get the power up to around 11 as currently running low on power in .177 -was a .22 but ive swapped barrel today and power has dropped so I'm thinking about ordering a new piston seal but also need to know if the spring I have is too short as I notice they list different springs for. 22 or .177
You probably know this, but a word of warning in case - the pro elite has huge power potential and is designed to run over 20 FP, well above the 12 FP limit, so make sure you have a chrono to hand, and expect to have to chop the spring a little... Spring length is a very poor guide of overall stiffness / energy, as the wire guage has such a huge effect. FWIW I prefer a less stiff, but still fairly long spring in these, i.e. 3.0mm wire. the 3.2 or 3.4 wire springs are stiff and difficult to get under 12Fp and still shoot nicely.