I am runing a rimfire PRS league on my end and will in next comps add bonus stage with 250 and 300y targets to test the folks a bit
Over the years have participated on all sorts of tactical/practical/military sniper comps , in centerfire that meant ranges in 1000-2000y class, and one thing that makes rimfire accesible is that many more ranges can accomodate it , so this season i set up a rimfire PRS league to hone the skils and new people learn to shoot better on a budget and on short range,Rimfire ELR is for me just an aditional step to make a better, more rounded shooter , as with rimfire PRS guys are learning realy fast to shot well from many positions but with mostly sub 150y distances the balistics part is kinda neglected a dope card at such distances is good year round. Rimfire ELR brings balistics work with it .
ELR centerfire is extremely costly ,ranges involved make it almost imposible to even try for most shooters. If you have followed Ko2M they hit the 2 mile only after couple of years and record 3hits on 3 shots is around 2000y similar is to be expected in rimfire . In Rimfire 300y might be done deal but past that it might take some time.
Like you sugested you could run 350y if that is all you can , practice will make you a better rounded shot no mater if you ever go past that distance.
The Big Sky ELR rimfire comp boss man is Jeff of Longrangeonly , i hear Vudoo Gun Works is bringing bunch of demo rifles to shoot on the 100 yard bay and Lapua has got you covered with ammo, during this time. ,
I am runing a similar comp on the other side of the pond late September