Are you speaking of the Crosman "lead-free" 8.5gr aluminum head, plastic tailed pellets?
Yeah, I've got some that I've shot in my Hatsan MOD95 .177 break barrel. With my rifle doing around 900fps the pellets will go through the tin of a coffee can on one side at around 15-20yds easily.
A free pallet from a home improvement store works great, but you need something that will catch or redirect the angle of the BB's down to the ground and not allow them to ricochet back at ya and for that I don't know how you want the target setup to be where you want to shoot. You need a light steel target catch box that's made for this purpose.
Nevermind, I think I understand what you mean about the "plastic pellet" that's the size of a BB and NOT a real air gun pellet like I have.