Imr 8208 xbr

[Zeneffect]

The general consensus is the published loads are scaled to max pressure which generates the listed velocities. Using muzzle velocity as your indicator of pressure is preferred over traditional signs which show up when you are already grossly over pressure. There is a chart available on this forum where you can extrapolate expected velocity gain/loss for barrel length. Use a chrono amd common sense and you will be fine.