300 The only thing I can say is over the course of 25 years I have had 3 friends that were all die hard 7 fans nothing good to say about the 300. One now shoots the 300 RUM the other 300 win and the other 300 WSM
I never say anything to them I either dig out my 300 win or my 300 wsm or confuse them all with the 25-06
What ever works just enjoy your new rifle hope its right for you.