Haven't shot my Rem 700 .243 in years.. but despite the "book values" for velocity/drop, etc. I know it isn't as accurate as either the the 725 with 140 gr loads in .260 (rebarreled), or the M98 '06 (150 gr.) both of which group factory loads just over 2 inches (3 shot groups) at the 300 yards they are zeroed at for tundra caribou at the time. We are good to go to 500 with LRF....
The .243 did just fine on my first two Dall rams, however - the first at 50 feet, the second at 30 yards...
And my wife's first and only moose at 80 yards. Plus several caribou and black bears under 200. I won't push it past 300, tho.
All of above with 100 gr factory loads...
1.7' 5 shot groups at 100 ain't all that shabby, given proper circumstance.... might have to try tweaking it somewith hand-loads one of these years- I've only had it since '73...
