Here you go then. If you want any more specifics, like elevation, temperature, shot placement, penetration, etc. let me know. I can clearly remember each animal taken. Some were desert deer, some were 5-6K, some were 8K+ elevations.
.25-06 Ackley: I limit shots on mule deer to 850 yards with this rifle & 115 HVLDs dependent on conditions. I hope to put another mule deer on the ground this weekend with this rifle/bullet combo.
100gr. TTSX, mule deer at 488 yards, deer went 0'
115 HVLD, mule deer at 160ish yards, deer went 30'
115 HVLD, mule deer at 601 yards, deer went 10'
115 HVLD, mule deer at 323 yards, deer went 30 yards
100 SMK, mule deer doe, 160ish yards, deer went 40 yards
100 SMK, coyote, 1327 yards, coyote went 0' (maybe 20' if you consider his spinning in place for about 3 seconds)
100 SMK, javelina, 100ish yards, pig went 0'
.300RUM: I actually try not to use this rifle for deer anymore, too destructive for me.
175 SMK, mule deer, 752 yards, elk went 0'
175 SMK, bull elk, 627 yards, elk went 30'
175 SMK, bull elk, 180ish yards, elk went 0'
210 HVLD, bull elk, 427 yards, elk went 10'
.270 Win
150 HVLD, cow elk, 402 yards, elk went 5'
150 Barnes XFB, cow elk, 150ish yards, elk went 0'
150 HVLD, mule deer, 50ish yards, deer went 10'
130 HVLD, mule deer, 30 yards, deer went 0'
130 Barnes XBT, mule deer, 150 yards, deer went 30 yards
130 Barnes XBT, mule deer, 330 yards, deer went 50 yards
Since the OP stated he would be limiting himself to 600-700 yards, I still stand by my statement his current load of 168gr. HVLD @ 3100 is more than enough for mule deer out to the 700+ yard mark. Not knowing exactly the area the OP is going to be hunting, just a basic calculation for a mid-desert DA and 50°F would seem like 1000ft/lbs of remaining energy should be possible out to 847 yards or so. A well placed shot should dump any mule deer on earth at that distance.
If the OP is looking for an excuse to work up another load, then the 210 HVLD around 2950 should be a showstopper for anything in North America.