Originally Posted by Thumper1991
I would think though this info would be published but I can't seem to find it.
There is no published data to even try & apply for this. Also, you should not allow marketing hype to lead into assumptions.
It's just an area that has to be tested in your gun, with your lot# of powder & load, at different conditions. If you plan to use the same barrel for a wide spread of conditions, then you can keep a log and expect compromise across some of the range.
I have summer guns that never leave the safe until temps get above 85degs. They're used only for hunting at high temps, where my hunting loads were developed, so I don't burn up any barrels shooting at lower temps -in an effort to produce some sort of universal guns.
I also keep ammo in my pants pockets, while load developing, and while hunting, single loading rounds just prior to actual shots. I do this hot or cold for any hunting gun. I also keep a hunting barrel acclimated to the field temps, by keeping them in shaded cases outside during hunts. They can take a couple hours to stabilize otherwise.