medalguy
Member
First some background. I've been reloading for about 45 years but recently moved to a climate where we have a lot of temperature variation summer to winter. Previously I've never had to worry about temperature variation between the seasons. However I now find myself wondering about this. Summers run upwards of 100+ and winters are frequently 20 or lower.
My question revolves around working up a load in winter and the effect summer temperatures will have on the final load. My reloading area is heated to around 65 degrees in winter, so how do I work up a load in winter when I'm shooting tests in 30 degree temperatures so that I can use the same charge in summer at 100 degrees? Is this enough of a variation in temperature to worry about?
I'm wanting to work up loads for .308 using a new lot of BL-C2 powder (actually pulldown WC846) and both 150 gr FMJBT and Sierra 168 gr Match bullets in military brass.
Any input will be appreciated.
My question revolves around working up a load in winter and the effect summer temperatures will have on the final load. My reloading area is heated to around 65 degrees in winter, so how do I work up a load in winter when I'm shooting tests in 30 degree temperatures so that I can use the same charge in summer at 100 degrees? Is this enough of a variation in temperature to worry about?
I'm wanting to work up loads for .308 using a new lot of BL-C2 powder (actually pulldown WC846) and both 150 gr FMJBT and Sierra 168 gr Match bullets in military brass.
Any input will be appreciated.