Gamerancher wrote:Humidity.
Mate of mine was living in Townsville, loaded up a bunch of ammo at home then travelled to Victoria in July for a National Title shoot. Had a bunch of fail-to fires. When we pulled the bullets, the powder had failed to ignite and came out in what definitely felt like moist lumps. ( ADI 2205 ) Don't know if it was the primers or powder that was worse affected but nothing went bang like it should have. Even when they did fire the shots were not where they should have been. This bloke is one of the best shooters in our sport in the country, so when he tells me, his spotter, that the shots aren't landing where they should be, I believe him.
Perhaps 28 - 30 + degrees and 70% + humidity while loading in Townsville, single digit overnight temps in Victoria, condensation was what we came up with.
Gamerancher wrote:How many years ago? 5 or 6, point was that it was with ADI powder, 20grains of 2205 to be exact. The rounds we pulled were damp inside and no, they hadn't gotten wet.
Those that did fire were erratic to say the least.
Can you load in a climate controlled environment? Perhaps cooler and low humidity, I dunno, maybe in an air-conditioned room?
When they say that ADI powders aren't temperature sensitive, it is in relation to varying external temperatures on a given load.
What I am relating to is the O.P's question about anyone having actual experience with loading ammo under certain conditions and shooting in totally different conditions. The above is my personal experience, yours of course,may vary.