Nice shot, and shooting at 100 yards. Do not overlook the BSA R10 .177. A buddy and I bought R10`s and I tinker alot. He left his as is out of the box. The gun prefers Crossman Premier 10.5gr in the cardboard box. At 40 yards it will stack these pellets in a very small hole. We installed 400cc bottles and have lots of shots.
Again, nice shooting.