I have heard people say that RL22 velocities change with change in temperatures. Is it a increase or decrease in velocity? Also is there a big difference in the change in velocities? I've been using RL22 for a few years now in my 300 win mag and have never noticed any differences when shooting at game or at a target. I have never checked it out on a chrony before either. I dont shoot 1000 yards or anywhere near that range. Most shots are close, some places I that I hunt I have taken game out to over 400 yards. The reason I'm asking is I have ran out of H870 which I used in my 7mm rem mag for over 20 years and now Hodgon doesnt make it anymore. I was planning on using RL22 for both rifles, but if there is a better choice then I would look at that. Thanks for any input.