After reading soo much about RL22 and sensitivity, I performed a test about a year ago for a couple pounds I have of the same lot #.
Shot my 300WM @ 600 yds, 3 round group was just under 1/2moa. Put same rounds in a freezer overnight (around 10 degrees I believe). Next day took rounds out of the freezer and fired 1 cold bore shot @ 600 yards. This round went into the same 1/2 min group. Rifle itself was not put in the freezer, so the chamber was the same as the ambient temperature (from memory I think it was around 70 degrees). I dont know if putting the rifle in the freezer would have made a difference or not? Very limited unscientific testing, but it aleviated some of my fears. I agree with many here, RL 22 is an excellent powder for accuracy and speed. I did however buy 5 lbs. of MRP as its supposed to be the "best" lots of RL22. Havent played with it yet.
