Look at this chart.
http://home.hiwaay.net/~stargate/powder/powder.htm
Faster burning than W760 which is what Winchester loads behind 300 gr bullets.
I have had poor results w/Big Game in the 270 & 30-06.
All I use are Barnes in every hunting round and have found that the Data in Barnes website to be dead on. Their first choice goes to VIT N540, 2nd is RL15.
http://www.barnesbullets.com/inform...PSESSID=dabf304dab1d8af1f7162a865bc605b9