RE: 55 yard shot!
Congrats.. nice shooting.
One tip on the BLOCK target though... take a rachet strap and put it around the target just like the steel bands are. Tighten it.. and as the target wears.. put a few more clicks on it every so often. This will make it last a whole lot longer. I normally tell people to do this when they purchase them from me... I tell them to do it from day 1.
Good Luck..