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Bart B. · November 20, 2013, 08:07 AM

Cold powder shoots bullets out slower than hot powder. Some tests were done with the .30-06 showing for a 1 degree change in powder temperature, there's about 1 to 2 fps change in muzzle velocity. Details can be seen at:

http://books.google.ca/books?id=yESN...rature&f=false

At long range with the .30-06, there's about 1.5 to 2 MOA change in elevation on the sight for every 50 fps change in muzzle velocity. At 100 yards, the change is about 1/10th MOA.

November 20, 2013, 08:07 AM	#5
Bart B. Senior Member Join Date: February 15, 2009 Posts: 8,927	Corrected data to match Hatcher's Notebook info Cold powder shoots bullets out slower than hot powder. Some tests were done with the .30-06 showing for a 1 degree change in powder temperature, there's about 1 to 2 fps change in muzzle velocity. Details can be seen at: http://books.google.ca/books?id=yESN...rature&f=false At long range with the .30-06, there's about 1.5 to 2 MOA change in elevation on the sight for every 50 fps change in muzzle velocity. At 100 yards, the change is about 1/10th MOA. Last edited by Bart B.; November 20, 2013 at 08:13 PM.