I’ve seen it written several times that the pellet of choice for checking you are on the right side of the law is the Bisley magnum, as this is what the police/labs would use to check your gun. I think the suggestion is the heavier pellet can push ME over the limit, more in PCP’s?
I tested 4 guns tonight one of them a .22 P15 stayed about the same at 11.5, another .22 P15 dropped to just over 10, a .22 Hw95 also dropped to near 10, and a .177 wildacat did the same.

Based on what I have read I wouldn’t have expected that. Anyone else find similar?

Cheers