Wads

[Don McDowell]

I'm going to say I don't really know as the wad sticking to the base of the bullet is that much of a detrement. I've found wads sticking into a cardboard box when all that had been shot into that box was a single group that at 200 yds was hovering around moa.
I've also found wads several hundred yards down range at the splatter line of a gong.
Now with hollow based bullets I can see where if something got wedged in there it might tend to throw the bullet out of balance.