Pistol Powder Temperature Sensitivity

Discussion in 'Reloading' started by Jeeper48, Jul 11, 2018.

Help Support Long Range Hunting by donating:

  1. Jeeper48

    Jeeper48 Well-Known Member

    Sep 20, 2017
    I apologize if this is a ignorant question but I wanted to asked before I proceed. Is temp sensitivity an issue with pistol powders and hunting for sub 50 yard shots? I would like to develop a couple of hunting loads for this upcoming season and didnt known if its something I should be concerned about. I know my limitations and would not take a shot past 50 yards so should I be concerned? I will likely develop the loads this fall, but hunting season in Iowa can get below 0 in December/January
  2. J E Custom

    J E Custom Well-Known Member

    Jul 29, 2004
    Temp sensitivity can be a problem with many powders but at short distances they don't have much of a bearing on most pistol cartridges.

    Pistols that shoot rifle cartridges at longer distances can have issues with temp sensitivity and effect the POI.

    Jeeper48 likes this.
  3. MagnumManiac

    MagnumManiac Well-Known Member

    Feb 25, 2008
    Temp sensitivity changes velocity, the issue with this is at long range, normal ranges would not see the difference generally, so you should be good to go.

    I will caution you that some powders are finicky in cold weather, those like H110/296 can be dangerous in cold weather due to squibs.
    You need a tight crimp and hot primer with a max load.
    I use the same ammo in both my revolver and carbine, 240gr Gold Dot SP and 24gr of 296. I got squibs @ -8C with these loads, in fact a few just clicked and fizzled, there was yellow unburned powder on those when I pulled the bullets.
    My crimp was good on these, so I assume it was the cold weather causing the issue, even at 0C and 1C all shots fired with no problem.

    Jeeper48 likes this.