Brass tends to be really hot right after firing, right? Almost everyone has witnessed or done the "hot brass dance." With most of my firearms, I have to let the brass sit on the ground a couple minutes before picking it up.
But with my Swiss K-31 and Prvi Partisan 7.5mm Swiss ammo, I can pop off a shot, crack open the bolt most of the way, reach into the ejection port, and pluck the spent case right out with my fingers. Usually it's still cold to the touch. And I've tried holding onto the cases for several seconds, so it's not just the "feels cold at first" phenomenon.
Haven't shot Prvi in any other calibers, nor Swiss surplus ammo in the K-31, so I dunno if the ammo brand is what's causing it, but that seems like the safest bet to me. Does Prvi use some kind of low-temperature powders? The ammo definitely isn't weak or anything. Kicks about as hard as a .308.
But with my Swiss K-31 and Prvi Partisan 7.5mm Swiss ammo, I can pop off a shot, crack open the bolt most of the way, reach into the ejection port, and pluck the spent case right out with my fingers. Usually it's still cold to the touch. And I've tried holding onto the cases for several seconds, so it's not just the "feels cold at first" phenomenon.
Haven't shot Prvi in any other calibers, nor Swiss surplus ammo in the K-31, so I dunno if the ammo brand is what's causing it, but that seems like the safest bet to me. Does Prvi use some kind of low-temperature powders? The ammo definitely isn't weak or anything. Kicks about as hard as a .308.