Originally Posted by wogpotter
Interesting! My 5~55Gr in 5 Gr increments is exactly that diameter
I wonder if this isn't just a marking change to a 5 Gr one as it has the identical diameter? Those 1 Gr marks must be really close together the 5 gr ones on mine are only about 1/8" apart!
I have both 5 and 1 grain marked measures, the only difference is the veneer scale on the rod, same body and size.
1-3 grain changes in the powder charge well not have a visible effect on accuracy. To optimize accuracy work on consistent seating depth and pressure. A loading stand with a adjustable ram well help this. Be sure and place the rb so the spur is in the same place every time, I like mine facing straight up.