I already said my peace on page 1, so
@Armored farmer will have to forgive me for a slight digression... it’s a self fulfilling paradigm, we shoot 100yrds, so we shoot 100yrds...
I grew up shooting 100yrds as “normal range,” working from there out to other objectives. About 9yrs ago (it was spring after I met my wife, which was 9yrs ago yesterday), on my wife’s first trip to the range with me, I was practicing at 600. I started at 100. She asked me, “why?” It never occurred to me - I always warmed up with a few shots or groups at 100, then did my other work - since then, I’ve tried to focus on my objectives, and rarely ever shoot 100yrds, except with new shooters/students. They say 40 is the new 30, orange is the new black, well... for a few years, 325 was my new 100, and then I realized even that didn’t make sense - why shoot at 325 at all on a day I wanted to shoot 600-1000? The only rifles I own still zeroed at 100yrds are either student loaners, or stuff I don’t really shoot which were zeroed before 2009...
I have two rifles built in the last 18mos, I can’t recall ever shooting them at 100yrds and both are being shot monthly or weekly. I boresighted, placed steel at my 800 berm and another at 600, and a paper target at 350. I laid down at my 300yrd line, centered on the 50yrd (350 paper) with two shots, then shot 300 and 500 (600 & 800 steel). I moved back 100yrds, laid down and shot 400 & 600. Moved back another hundred, confirmed 500 (informal tracking test) and fired 700. Came back to my bench at zero yards, confirmed 600 and fired 800... If I had to shoot an aspirin at 100yrds, I might miss, BUT I’d kill a rabbit at 100... I know they both hold MOA or sub-moa to 800yrds. Since then, I haven’t shot any less than 300 with either, just those 2 shots at 50 to get the scope on the steel.
I do, however, have the luxury of private property, developed into semi-featured ranges for my use. It’s hard NOT to shoot at 100yrds if you show up to a range where the berm is 100 and the bench is zero...