Never had any of those problems, but RL26 was least accurate. Norma MRP was my favorite and RL23 was a close second.
I used RL22 for a while, but found the MRP was better, you have to use about one more grain of powder. Plus it likes heavier
bullets better than the RL22. I used a lot of MRP in my 270 with 150gr partitions and RL 23 with 140gr. Also MRP in my 7mm Mag
With 160gr Accubonds or Trophy Bonded Tipped.
