Last winter I got bored and measured a bunch of BBs. I have since added a couple new types, so I have updated the chart.Most notably, Daisy has some match BBs (NOT the 0.175" Avantis intended for the 499 target rifle) that are 0.1720 caliber -- and they blow away all the others for sizing consistency. I have only tried them in my Daisy 35, and it does not like them, regular Daisys do better on average, go figure. The other new add is the Umarex silver BBs, which weigh a bit more than their black ones, but are otherwise quite similar in consistency.
Sweet! The 0.1720s are shooting better than the intended Avantis?