Seems the RL23 gives me a bit better accuracy than does the 26. The RL26 gets a bit more velocity but not real noticeable. What's your experiences with both these powders in the Ackley version ? I picked up 6 lbs of each. Either one works in my 6.5 cartridges so they'll be used either way. At this point it's looking like the RL23 gets the nod for me.