1- Try lowering your pressure to 50 PSI this will elevate your water to a height of approx 115 ft
2- Check by your H/W heater to see if you have a check valve on the return circulation line
If you have a check valve close to the C/W piping you can get this kind of shock wave sound.
3- Check your piping for excessive (long) runs without proper supports
4- Double check to make sure all your valves are fully opened THEN crack them back a 1/4 turn to prevent them from freezing
(sticking) in the open position.
5- Have someone check the near heater piping for excessive fittings like ell bows.
Good luck.