Last fall I was working up loads with 160 Accubonds on my 7mag using both RL-22 and H4831SC for an elk trip. They were both giving me about the same group size and the RL-22 was about 150ft/sec faster so I was leaning toward the RL-22 but I was concerned about the temperature issues so I ran a little test. This was late summer so the temps were around 90. I put 3 rounds of each load in the freezer and 3 rounds of each load at ambient and chrono'd each group. Based on the average velocities the RL-22 lost about 100ft/sec due to temp and the H4831SC didn't loose any. This is a very limited test so take it as you will and 100ft/sec would probably have little effect on the POI but I decided to go with the H4831SC due to it's consistancy.
