I’m reloading the 416 rem mag w 400 grain Woodleighs - hydros. I don’t have time to test various powder weights. I’m off to the Northern Territory soon. Question. Using AR2208 )Australian powder equivalent to 4064/4320 - but not heat sensitive. However max loading is 77 grains. This load gives the maximum velocity but pressure is fairly “up there”. The temperature in NT (not even “summer” 39-40 (204 F). What’s your opinion about using the max load or should I drop to say 75 grains???