1. Cerebus

    Shell casing temps

    I noticed something odd (to me anyway) the last couple weekends at the range. The shell casings coming from my AR10 are very hot, too hot to pick up right when they're ejected. This seems normal to me. But shooting the very same FGMM out of my R700, I can catch the casing in my bare hand as I...
  2. Grump

    Barrel Life spreadsheet powder temps?

    I think it was from somewhere herd on the hide that I found out a few months ago about an "Accurate Barrel Life" calculator spreadsheet that would output the number of rounds to be expected before accuracy dropoff. Quite a few powders are listed in the "comment" for the cell with the powder...