I am impressed, but.... 100gr means 100 grain which is 6479.891 milligrams, i.e. 6.4 gm or approx 1/4oz! Definitely a delicate touch
Ooooh... that's a good one...

even though took me some time to understand...
This must be, because where I live, right in the middle of continental, central Europe, we use those ancient English measurement units very rarely