Mixing diferent Lots of the same Powder

[royinidaho]

Just an example:

x grains of RL-22 in a 338 Win produced great accuracy and 2800 FPS MV. I considered this a bit more than maximum load. Case extraction was difficult but could be performed w/the palm of the hand whacking the bolt.

Ran out of RL-22. Went to a different store and bought a pound of a different lot. Never gave it much thought.

Same amount of powder and same everything else resulted in 2930 FPS again with good accuracy and out of this world pressures. Like a fool I shot a three shot group.

Its a good thing it was a strong action etc......

Thus w/any RL powder and new lot. Start low and rework up. Rocky's bench mark loads is a good idea.