Sorry, was not clear. I'm new to all this but it seems if the bullets expands on firing that the sabot would engage the rifling better, along with the ribs on the side of a bullet. I do not see how a all copper bullet could expand on firing.

I do plan on trying the 250 grain expanders along with the bullets listed in the other post.

Maybe some of you guys can explain this better to me.

The cinder blocks says it all huh?