Humid or dank conditions affect reloading?

[Guy B. Meredith]

Here in Oregon the Winters are pretty dank, Summer can be humid. I'm wondering whether these conditions affect reloading. I haven't figured a way to set up my gear in the house so I will probably set up in the garage which has an ambiance that tracks the conditions outside.

Right now my tentative plan is to set up in the garage and have a propane heater for the colder days. I do not know whether the heater helps with dankness.

 

[Toprudder]

Unvented propane heaters will add moisture to the air, vented heaters won't. I heat my shop (well insulated) with an electric oil filled radiator. The humidity stays around 50% on wet days, lower when it is dry. Summertime I keep a window AC running on thermostat set to ~ 78 to keep the humidity down.

 

[JohnhenrySTL]

I figured I would load in my garage, but I somehow ended up making my first loads in my basement. Quickly my basement became useless space on the way to my reloading room.

I live humid Missouri. I had one dehumidifier and for my guns bought another. For about 3 or 400 bucks, my whole house is better off. As Im certain humidity has an effect on loads, pressure, potentially damaging primers, and likely powder when its exposed and out of its container, it is certainly not as much as an issue as I assumed it was before my first loads went bang!

My diverse collection of firearms allows me to avoid hot loads all together. I do know one load made and shot with out troubles or pressure signs in 30 degrees, may have more pressure in 100 degree weather.

One suggestion I came up for you is to keep your primers and powder somewhere dry in your house. Keep your press, bullets, brass, and other equipment in the garage. Perhaps run a dehumidifier in your garage the day before.

Best of luck

 

[Bezoar]

in the lee books, he wrote moisture does affect what you load.

i believe its why professional shooters will test different lot numbers and buy all they can of one.

I think its why lee went with volumetric data for reloading.

 

[joem1945]

I tried to reload in the garage but summer was too hat and humid. Set up in basement with heat and AC and 45% humidy.