Re: Reliable SPL meter
None of the affordable ones go high enough, Most top out around 130db which is not high enough unless you move it away.
With a fully suppressed and sub sonic load you might manage but then again your not loading for sound you're loading to reach a speed and stability point.
Best you can do is put it down range at the target.
A suppressed full power load is beyond the meter, so unsuppressed you'll run into a problem.