Maynard, I agree with you for TR but for ISSF 300m, which a 300m free rifle is typically built for, is a slightly different game.
http://www.accurateshooter.com/competition/300m-shooting-a-challenging-discipline/
I shoot ISSF 300m the same way I shoot ISSF 50m which is totally different to the way I shoot TR.
ISSF 300m and 50m is a 60 shot match with unlimited sighters shot as a string. So you can work out the wind correction for a given condition and then shoot that condition rather than read the wind and dial in the correction. Also as you only shoot at one distance you don't need to think in MOA, you can think in distance (ie this wind will put me in the 8 ring).
When shooting string you also see your groups forming on your target so you don't need plot sheets and in certain conditions maintaining plot sheets can hinder your performance as it increases your time between shots.
You can get by using 1/4 minute/click sights on ISSF 300m but for ISSF 50m it is too coarse. The 10 ring for 300m is 100mm dia (1.15MOA if I got the calcs right) and the X ring is 50mm dia (0.57MOA). While for 50m the 10 ring is 10.4mm (0.72MOA again if I got the calcs right) and the X ring is 5mm dia (0.34MOA). So if using a 1/4 minute/click sight, with 4 clicks you've gone almost completely across the 10 ring on the 300m target compared to the 6 clicks for the 300m ICFRA bull (bull dia 140mm or 1.6MOA)
For 50m, standard sights are around 1/8 minute/click while fine sights are around 1/12 minute/click.
So when I shoot TR I use 1/4 minute sights, think and work in MOA, and maintain a plot sheet. But when I shoot ISSF 300m or 50m I use 1/8 and 1/12 minute/click sights, think and work in distance, and don't maintain a plot sheet.
All my sights move in the same direction though! Not going to mix service and match directions
