The only thing I would like to add is to differentiate between the "X" and the TSX.
The TSX is a lot more forgiving and a lot better shooter in a wide variety of tubes.
FWIW in thirty caliber and a couple bullet weights, the TSX has shot better than the E-Tip; In three 300 Winnys, the TSX's have shot great.
RL-22 or RL-25 for me with 180's and 200's.
