I am using a Huma reg on my benchrest RAW 22 and want to try out a bunch of different pellets. I tether the rifle with a external regulator and I am wondering if I was to just open the huma regulator as high as it will go (190 ish bar) could I just attach my external regulator and just adjust from a low pressure up until I find a sweet spot? I could then just go back and adjust the huma regulator to that pressure. If this would work I think it would really cut the tuning time way down.