180 partition in 300 wtby has been a dismal failure on our white tails if you try a frontal shot, barely makes it to the hindquarter... I have a small 6mm, slower than 243 that does the same with 85 tsx...
On nilgai, which are 500ish pounds, I've shot a few... quartering shots the 180s never exited... ugh....
JB told me the 200 partitions where the thing with mags.. to not use the 180 partitions..
I solved the issue by going all barnes basically if possible.
