Reloading for .308

I have used IMR4895 and had too many troubles with temp sensitivity. I have switched to Varget and I will never look at any other powder for my .308. Very consistantly shoots tight groups with no temp issues.
 
I started with IMR4895 and moved on to Varget after that first pound ran out. I have read about the stability issues with temp changes, that is why I switched. I am using Sierra Matchking 155gr HPBT.
 
I'm curious over what temp ranges you saw big differences? Just summer to winter temps or as little as 10 or 20 degrees?

I have used IMR4895 and had too many troubles with temp sensitivity. I have switched to Varget and I will never look at any other powder for my .308. Very consistantly shoots tight groups with no temp issues.
 
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