temperature effect on handload

[tudurgs]

Have landed on a good load for a 165 gr Partition for my .300 Remington SAUM. It chronographs at about 3030 fps at 75 degrees. Will be using the load in Alberta in November this year - probably about 20 degrees. Is there a correction table for IMR4350 burn rates and corresponding ballistics changes?

Thanks

 

[Ol` Joe]

You might figure about 2 fps / deg F as a rule of thumb. The truth is, the only way to know for sure is to crono at the lower temp to verify.

 

[longwinters]

Or maybe work up some more loads with temp insensative powder.

Long