Probably why they discontinued the 410 GP. I agree, they shot excellent out of my X-150 i had.

"Now all you have to do is
convince 99.9 % of the shooters that a flat point bullet will out
perform a Hollow Point and a speer pointed bullet because they have
about 40 years of magazine articles, paid writers and misconceptions
that tell them different, and the fact is 99.9 % of the shooters won't
buy them!!!!"