You can spend your entire life testing airgun report if you desire. Simply pressed max db on the meter, and placed accordingly.
Here are some numbers from a Wolverine Hi-Lite .22 @ 230BAR (do not have chrony numbers) in a suburban backyard. I'd say the backyard is 27Lx15W in yardage. I shot in the center.
In Db:
Shooter: 105, 105.8 (multiple readings - these are extremely close averages)
Muzzle: 100.7, 101.5 (multiple readings - these are extremely close averages)
Impact zone: 98.8 (bottom of fence - I know - Don't lecture me - wanted a good smack)
12 yards behind gun: 70.3
10 yards perpendicular from gun: 78.9
Corner of fence-line (I'd say 10 yards in front of gun, and 10 yards to the right): 79.7
One reading inside the doorway from muzzle (Of course no one does this when game presents itself): 100.9
Need to order Different scope covers for the Bushnell Nitro, as the one that came with the scope is way too tight to even get halfway on.
https://www.noisehelp.com/noise-level-chart.html
https://chchearing.org/noise/common-environmental-noise-levels/
five shot, 25 yard groups. The fliers were me. The previous owner said this gun is so accurately boring that he had to sell it. Indeed, it is a tack driver. However, when I'm able to shoot 100 yard groups l'd like to see the spread:
Looks like this Wolverine is going from 16gr. Hades to 20.2 NSA's. Just a matter of re-sight in.
17.5 NSA on left; 20.2 NSA group on right. Five shots @ 30 yards:
