Your 6 BR velocity is 2920 fps? That is pushing the mail. My BR ran about 2840 fps with 30 grains of Varget in a 26 inch barrel, 8 twist. No pressure at that speed?
The 6mm BR would be an excellent chambering for young hunters. Or a 54 year old hunter like me.
A crunched down 243 Win, heavy for caliber bullets, and Whitetails. A match made in heaven for new hunters. Would be just as deadly on coyotes or any other varmints shooting any one of the 75 grain bullets available.