2nd I tried a Highland jacketed lead bullet with S335 powder at various velocities. What is interesting here is that the bottom barrel likes a load of 50,5gr @ just under 2000f/s (even at 70M), but the top barrel seems to like 55gr at 2300f/s. What is also interesting to note, is that with the last load I tested, at the highest velocity, the bottom barrels group moved up considerably in relation to the top barrels group. (when I say a barrel "liked" a load, I mean how tight was the group, and in this case, how close to point of aim was it.)