Who weigh their pellets and to what tolerances?
I was thinking point one tenth of a grain either side of what's on the tin is accurate enough for general ranges.
Anything around half a grain out needs sorting into different lots.
.177 JSB Exacts 8.4 and heavies are quite close with the odd one a little off. .22 Webley Verminpell upto point four of a grain higher and lower than on tin descrepency and Bisley Magnums in .22 some upto point eight of a grain out, that's got to make a difference at 35 to 40 yards.
What do you all do.