ORIGINAL: BS
First of all, I would get a solid nose bullet....you don't need expansion, penetration is the key.
What is your load? and are you using a 'wad' under the bullet?
BS,
My intent about this post was to give folks an easy way to calculate the velocity contribution to vertical spread of their patterns from their chronys. I actually don't plan to hunt out to 150 yards, although I would take immense pleasure in keeping all my rounds at 150 yards in an 8 in pattern with my open sights. The problem is, I have been measuring velocity distributions greater than I posted, so I know that I probably can't without improving the distribution of MV's.
I did plan to use wads or some other gas seal with the BB 410s when I tested them. Part of the reason I considered them was that I hoped I could narrow the velocity distribution with them. In any event, I am getting advice from"every one I know"regarding what bullet/charge combinations should be usedand yours also is welcome.
Happy Hunting, Phil