Guns in hot cars

[Dennis]

I did just test zero on a couple of truck guns yesterday. One was a few inches right at a hundred, another was an inch off to the left.

Bounced around enough to actually affect zero vs red dots have progressed from a perfect dot, to a tiny blip of stem on a cherry, to a hint of an 8, to an 8 on me over the past several years?

I plan on testing the bounced around prism and LPVS guns tomorrow and see if they are off or it’s me.

Haha I keep mine somewhat padded and wedged in for minimal movement, but I am sure there is some.

I hear you on the red dots. When I qualify I turn them down as much as possible to get the clearest dot like object. Also why I bought a cheap 4-16 Vortex to verify that my RDS guns are patterning well.

Dennis.

[ABNAK]

I did just test zero on a couple of truck guns yesterday. One was a few inches right at a hundred, another was an inch off to the left.

Bounced around enough to actually affect zero vs red dots have progressed from a perfect dot, to a tiny blip of stem on a cherry, to a hint of an 8, to an 8 on me over the past several years?

I plan on testing the bounced around prism and LPVS guns tomorrow and see if they are off or it’s me.

Welcome to old age! It's called astigmatism. My RDS (all Aimpoints except for one EOTech) all have a little "tail" on them, for me it's at about 5 o'clock. I try to focus on the main dot and ignore the tail, but it makes fairly precise zeroing a bit more difficult than in the past.

Saw a video once on how to tell if it's your RDS or you (i.e. astigmatism). Look at the dot as you slowly rotate the rifle; if the "tail" stays in the same place (like 5 o'clock for me) then it's definitely you and not the sight.

[davidjinks]

My main concern would be the thermal stability of the powder being used. Not all powders are created equal.

In the grand scheme of things, check your ammo every now and then and don’t forget to rotate it every 6 months or so.

So, with the way things are going, I’ve decided to change some things. Most notably, carrying to and from work. However, I’m unable to carry inside the building, and therefore must leave my pistol in the car.

My state sees extreme temperature, and temperature swings, and the inside of a car can get mid triple digits. So, my question is what effect does this have on the cycling of the gun? I’m not worried about ammo “cooking off”, but rather if the cases themselves could expand to the point of causing issues chambering a round.

I know there are tons of people here with real-world “for keeps” experience with this, so if it’s a stupid question, well I guess let me have it.

Also, yes I know having to disarm is BS. I know they make pocket shit I might could get away with. It’s a business decision. I feel the odds are greater that I’d get caught and they’d fire my ass, than the odds of me needing to unscrew a pistol at work.

Search returned nothing for me.

Thanks gents