I zero hunting rifles with Plex reticles for MPBR, B&C for 200 or 300 as appropriate, some dial yardage systems are sighted for MPBR and others at a set even distance, and turret scopes are usually sighted for 100 and carried with the turret dialed for MPBR. More than occasionally I'll slip the scale on a turret or CDS scopes to make the chart match the conditions, and have sighted ballistic reticles in at 400 or 500 with the appropriate crosshair to move the errors back to where they don't matter as much.
A couple of my rifles have summer and winter loads, since its easier to bring the velocity back to the chart than the chart to the velocity.
I have my own 1/2 mile range, and have tried just about everything once. Shoot F-Class too.
