High input pressure??

[Polishpickles451]

I was using my friend's adjustable tank today and he told me to try turning up the imput pressure to 1100. I tried it and I loved the trigger feel. I played with it fine at that pressure for about 2 hours and the preformance was nice.
Could there be anything wrong with doing this on a 68 classic? Will my seals get worn or something? I was using a 47ci Bulldog adjustable and the stock trigger.
If anyone knows some greusome side effects of recommends high input pressures please tell me !

[TransMan]

wont hurt the gun i dont think but it may be hard to get it to shoot under 300fps or not depending on ur gun