Mine has most definately settled on these as well 17g V-Max, the Remington were **** in my new rifle but I have returned to them with a handful, as I have with the 20g HP CCI which were also **** and they seem to work pretty well now, I wish I knew why the 20g CCI fly higher than the 17g at 100yards though!! .
Seems that now my barrel has seen a few thousand rounds it is happy with most, but for some strange reason the Hornady still seem to edge it....
A lot of shooting is in the head remember (especially when you find the right ammo )
At a guess, heavier bullet = longer bulle