I shoot 2 loads in my M1.
I have it sighted in for my ball duplication load.
I have developed a very accurate cast bullet but it shoots quite low from my jacketed setting.
I want to know how far my POI will change at 100 yds with 1 click of elevation.
I would like to be able to move back and forth between sight settings with out resighting each time.
Are M1 sights capable of moving back and forth with any repeatability?